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Boston Gear is a pioneer and leader in the power transmission industry, offering a comprehensive selection of high-performance power transmission products and superior service.

Manufacturer of precision components like Spur Gears, Gear Boxes Sprockets, Speed Reducers, Timing Belts, Linear Bearings, Timing Pulleys, Miniature Bearings, Shafts and more Call W.M. Berg setting the standard of excellence as the world’s leader i...

Atlanta Drive Systems - The World Leader in Rack & Pinion Drive Technologies

MISUMI eCatalog, the catalog company

Martin Sprocket and Gear manufactures power transmission products, material handling components and systems as well as industrial hand tools and custom commercial forgings.

We are the leading supplier of metric Spur Gears, Helical Gears, Spiral & Striaght Bevel Gears, Miter Gars, Ring Gears, Screw Gears, Gear Racks, Worms & Worm Wheels, Ratchets & Pawls, Involute Splines, and related gearing items.

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

PIC DESIGN MANUFACTURES STANDARD CATALOG AND BUILD-TO-PRINT PRECISION MECHANICAL COMPONENTS IN INCH AND METRIC SIZES.

VEX Robotics Design System

Grainger is a leading domestic and international business-to-business distributor. With thousands of products to choose from, we

Set Screws, Music Wire, Tungsten Wire, Wire Cutters, O-Rings and Hypodermic Tubing are some of the tools, parts and materials you can find at AmazonSupply.com, The Hardware Store For Researchers and Developers.