![Boston Gear H1015L Plain Helical Gear, 45 Degree Helix, 14.5 Degree Pressure Angle, 0.750 Bore, 10 Pitch, 15 Teeth, Steel, LH: Amazon.com: Industrial & Scientific Boston Gear H1015L Plain Helical Gear, 45 Degree Helix, 14.5 Degree Pressure Angle, 0.750 Bore, 10 Pitch, 15 Teeth, Steel, LH: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51sAKcWXaML._SX342_.jpg)
Boston Gear H1015L Plain Helical Gear, 45 Degree Helix, 14.5 Degree Pressure Angle, 0.750 Bore, 10 Pitch, 15 Teeth, Steel, LH: Amazon.com: Industrial & Scientific
![Amazon.com: Heli-coil 6mm 304 Stainless Steel Helical Insert, M6 x 1 Internal Thread; PK100 A4184-6CN060-1 Each : Industrial & Scientific Amazon.com: Heli-coil 6mm 304 Stainless Steel Helical Insert, M6 x 1 Internal Thread; PK100 A4184-6CN060-1 Each : Industrial & Scientific](https://m.media-amazon.com/images/I/51CynQ36-dL._AC_.jpg)
Amazon.com: Heli-coil 6mm 304 Stainless Steel Helical Insert, M6 x 1 Internal Thread; PK100 A4184-6CN060-1 Each : Industrial & Scientific
![Amazon.com : JARLINK 2 Pack Electric Pencil Sharpeners Bundle, Heavy-duty Helical Blade to Fast Sharpen, Auto Stop for No.2/Colored Pencils(6-8mm) : Office Products Amazon.com : JARLINK 2 Pack Electric Pencil Sharpeners Bundle, Heavy-duty Helical Blade to Fast Sharpen, Auto Stop for No.2/Colored Pencils(6-8mm) : Office Products](https://m.media-amazon.com/images/I/71GEfMMJR8L._AC_SY355_.jpg)
Amazon.com : JARLINK 2 Pack Electric Pencil Sharpeners Bundle, Heavy-duty Helical Blade to Fast Sharpen, Auto Stop for No.2/Colored Pencils(6-8mm) : Office Products
![Amazon.com: with Extra 10 Carbide Inserts 1'' Heavy Duty Helical Indexable Weldon Shank End Mill for Machining Aluminum : Industrial & Scientific Amazon.com: with Extra 10 Carbide Inserts 1'' Heavy Duty Helical Indexable Weldon Shank End Mill for Machining Aluminum : Industrial & Scientific](https://m.media-amazon.com/images/I/61LypXvNQ2S._SX342_.jpg)
Amazon.com: with Extra 10 Carbide Inserts 1'' Heavy Duty Helical Indexable Weldon Shank End Mill for Machining Aluminum : Industrial & Scientific
![Amazon.com: CRKT Helical EDC Folding Pocket Knife: Everyday Carry, Modified Tanto Blade, Flipper Open, Liner Lock, Aluminum Handle, Deep Carry Pocket Clip K500GXP : Sports & Outdoors Amazon.com: CRKT Helical EDC Folding Pocket Knife: Everyday Carry, Modified Tanto Blade, Flipper Open, Liner Lock, Aluminum Handle, Deep Carry Pocket Clip K500GXP : Sports & Outdoors](https://m.media-amazon.com/images/I/31ZNpVJos6L._AC_SY580_.jpg)
Amazon.com: CRKT Helical EDC Folding Pocket Knife: Everyday Carry, Modified Tanto Blade, Flipper Open, Liner Lock, Aluminum Handle, Deep Carry Pocket Clip K500GXP : Sports & Outdoors
![Explosively Driven Pulsed Power: Helical Magnetic Flux Compression Generators (Power Systems): Neuber, Andreas A.: 9783540260516: Amazon.com: Books Explosively Driven Pulsed Power: Helical Magnetic Flux Compression Generators (Power Systems): Neuber, Andreas A.: 9783540260516: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/41A9+ARhlSL._SX313_BO1,204,203,200_.jpg)
Explosively Driven Pulsed Power: Helical Magnetic Flux Compression Generators (Power Systems): Neuber, Andreas A.: 9783540260516: Amazon.com: Books
![Cyclized Helical Peptides: Synthesis, Properties and Therapeutic Applications 1, Li, Zigang, Zhao, Hui, Wan, Chuan - Amazon.com Cyclized Helical Peptides: Synthesis, Properties and Therapeutic Applications 1, Li, Zigang, Zhao, Hui, Wan, Chuan - Amazon.com](https://images-na.ssl-images-amazon.com/images/I/51ye4WjoZmS._SX346_BO1,204,203,200_.jpg)
Cyclized Helical Peptides: Synthesis, Properties and Therapeutic Applications 1, Li, Zigang, Zhao, Hui, Wan, Chuan - Amazon.com
![Amazon.com: 2C Kids Boys Indoor Outdoor Backyard Fun Play Sky Wheels Helicar Helicopter Remote Control Toy and (1) Ninja Wall Crawlers Set Rescue Me Bundle!!! : Toys & Games Amazon.com: 2C Kids Boys Indoor Outdoor Backyard Fun Play Sky Wheels Helicar Helicopter Remote Control Toy and (1) Ninja Wall Crawlers Set Rescue Me Bundle!!! : Toys & Games](https://m.media-amazon.com/images/I/71iypSRBF9L._AC_SX522_.jpg)
Amazon.com: 2C Kids Boys Indoor Outdoor Backyard Fun Play Sky Wheels Helicar Helicopter Remote Control Toy and (1) Ninja Wall Crawlers Set Rescue Me Bundle!!! : Toys & Games
![Symmetrical Anchor Plates in Soil Mechanic: Soil Anchors, Helical Anchors, Soil Hook System, Grouted Anchors: Niroumand, Hamed: 9781470066246: Amazon.com: Books Symmetrical Anchor Plates in Soil Mechanic: Soil Anchors, Helical Anchors, Soil Hook System, Grouted Anchors: Niroumand, Hamed: 9781470066246: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/514V1KlzdpL._SX331_BO1,204,203,200_.jpg)
Symmetrical Anchor Plates in Soil Mechanic: Soil Anchors, Helical Anchors, Soil Hook System, Grouted Anchors: Niroumand, Hamed: 9781470066246: Amazon.com: Books
![Amazon.com: Spartan Locker Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up (SL D30-4-27-LSD) : Automotive Amazon.com: Spartan Locker Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up (SL D30-4-27-LSD) : Automotive](https://m.media-amazon.com/images/I/71aiQDYLYFL._AC_SL1500_.jpg)
Amazon.com: Spartan Locker Helical Limited Slip Differential Worm Gear Positraction Dana 30 Front 27 Spline 3.73 & Up (SL D30-4-27-LSD) : Automotive
![Helical and Spiral Antennas (Electronic & Electrical Engineering Research Studies: Electromagnetic Applications): 9780863800603: Amazon.com: Books Helical and Spiral Antennas (Electronic & Electrical Engineering Research Studies: Electromagnetic Applications): 9780863800603: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/51iO3hf985L._SX331_BO1,204,203,200_.jpg)
Helical and Spiral Antennas (Electronic & Electrical Engineering Research Studies: Electromagnetic Applications): 9780863800603: Amazon.com: Books
![Amazon.com: T best RC Helical Gear Set, Helical Helical Pinion Gear RC Car Accessory Suitable for Axial SCX10 II AR44 90046 : Toys & Games Amazon.com: T best RC Helical Gear Set, Helical Helical Pinion Gear RC Car Accessory Suitable for Axial SCX10 II AR44 90046 : Toys & Games](https://m.media-amazon.com/images/I/51ky4Uid8GL._AC_SX425_.jpg)
Amazon.com: T best RC Helical Gear Set, Helical Helical Pinion Gear RC Car Accessory Suitable for Axial SCX10 II AR44 90046 : Toys & Games
![Amazon.com: JET JWP-208HH, 20-Inch Planer, Helical Head, 230V 1PH, 5HP (708544) : Tools & Home Improvement Amazon.com: JET JWP-208HH, 20-Inch Planer, Helical Head, 230V 1PH, 5HP (708544) : Tools & Home Improvement](https://m.media-amazon.com/images/I/71NjT+dPNZS._AC_SY355_.jpg)
Amazon.com: JET JWP-208HH, 20-Inch Planer, Helical Head, 230V 1PH, 5HP (708544) : Tools & Home Improvement
![Helical compression cylindrical springs: design, calculation and verification (Engineering Manual): Faussone, Andrea: 9781794695290: Amazon.com: Books Helical compression cylindrical springs: design, calculation and verification (Engineering Manual): Faussone, Andrea: 9781794695290: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/41bp0NonVUL._SX384_BO1,204,203,200_.jpg)
Helical compression cylindrical springs: design, calculation and verification (Engineering Manual): Faussone, Andrea: 9781794695290: Amazon.com: Books
![Amazon.com : JARLINK Electric Pencil Sharpener, Heavy Duty Helical Blade for No.2/Colored Pencils(6-8mm), Fast Sharpen for School Office Artist (Black) : Office Products Amazon.com : JARLINK Electric Pencil Sharpener, Heavy Duty Helical Blade for No.2/Colored Pencils(6-8mm), Fast Sharpen for School Office Artist (Black) : Office Products](https://images-na.ssl-images-amazon.com/images/I/31iI7%2B1W9uL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA479%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com : JARLINK Electric Pencil Sharpener, Heavy Duty Helical Blade for No.2/Colored Pencils(6-8mm), Fast Sharpen for School Office Artist (Black) : Office Products
![Protocols for Multislice Helical Computed Tomography: The Fundamentals: 9781841844220: Medicine & Health Science Books @ Amazon.com Protocols for Multislice Helical Computed Tomography: The Fundamentals: 9781841844220: Medicine & Health Science Books @ Amazon.com](https://images-na.ssl-images-amazon.com/images/I/41hPeVm+kHL._SX313_BO1,204,203,200_.jpg)
Protocols for Multislice Helical Computed Tomography: The Fundamentals: 9781841844220: Medicine & Health Science Books @ Amazon.com
![Amazon.com: Artist's Choice Electric-Pencil-Sharpener Battery Powered Heavy Duty Helical Blade Pencil Sharpener : Office Products Amazon.com: Artist's Choice Electric-Pencil-Sharpener Battery Powered Heavy Duty Helical Blade Pencil Sharpener : Office Products](https://m.media-amazon.com/images/I/71A8H8-3w7L._AC_SX522_.jpg)
Amazon.com: Artist's Choice Electric-Pencil-Sharpener Battery Powered Heavy Duty Helical Blade Pencil Sharpener : Office Products
![JET JJP-12HH, 12-Inch Helical Head Planer/Jointer, 3HP, 230V 1PH (708476) - Power Planers - Amazon.com JET JJP-12HH, 12-Inch Helical Head Planer/Jointer, 3HP, 230V 1PH (708476) - Power Planers - Amazon.com](https://m.media-amazon.com/images/I/61thelGdZSS._AC_SY355_.jpg)
JET JJP-12HH, 12-Inch Helical Head Planer/Jointer, 3HP, 230V 1PH (708476) - Power Planers - Amazon.com
![15mm Square Tungsten Carbide Replacement Cutter Inserts Knives 15 x 15 x 2.5mm-4 Edges with 2" Face Radius fit for Woodworking Helical Planer Head and CNC or DIY Wood Lathe Turning Rougher 15mm Square Tungsten Carbide Replacement Cutter Inserts Knives 15 x 15 x 2.5mm-4 Edges with 2" Face Radius fit for Woodworking Helical Planer Head and CNC or DIY Wood Lathe Turning Rougher](https://images-na.ssl-images-amazon.com/images/I/41jyM9uWCHL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOUR%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA9%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
15mm Square Tungsten Carbide Replacement Cutter Inserts Knives 15 x 15 x 2.5mm-4 Edges with 2" Face Radius fit for Woodworking Helical Planer Head and CNC or DIY Wood Lathe Turning Rougher
![Amazon.com: Amazon Basics Portable Electric Pencil Sharpener, Helical Blade, Auto Stop, Battery/USB Cord Operated : Office Products Amazon.com: Amazon Basics Portable Electric Pencil Sharpener, Helical Blade, Auto Stop, Battery/USB Cord Operated : Office Products](https://m.media-amazon.com/images/I/71-T-EOYSUL._SX342_.jpg)