"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Hex wrenches, also known as Allen keys, are the tools you use to screw and unscrew fasteners that have a ...

“It’s well-designed, strong, sturdy, and efficient.” ...

Pricey, but you get a good range of Allen key sizes here, and the set should last a long time A good set of Allen keys is essential for every cyclist and Birzman’s Long Arm Hex Key set is worth ...