How is an Allen wrench used?

You can only use an Allen wrench on bolts specifically designed for it. Learn how an Allen wrench is used from this article.

Everything You Need To Know About Hex Key Sets

China Customized Allen Wrench Suppliers & Manufacturers - Factory Direct Wholesale - Delixi Group

3/32 Allen Wrench — Cable Bullet

Buy 9 Piece Long Hex Key Allen Wrench Set (1.5mm - 10.0mm)

6 Tips on How to Use a Hex Key, Hex Keys

What is the difference between an Allen wrench and a hex wrench? - Quora

5 mm Hex Allen Key - Sunrise Tools

Allen Wrench

Hex key - Wikipedia

L-Shaped Hex Wrench set isolated on white background. This key is usually used to open or remove bolts on bicycles Stock Photo - Alamy

Home Improvement, HowStuffWorks