- Perfect for the common 5mm hex hardware found on every modern bicycle. - Ergonomic dual-density screw driver handle. - Features extra long hex key and second ball-end. - Designed to stand up to the harsh conditions of professional use. The 5mm hex is by far, the most common size hex found on modern bicycle. Inspired by our other hex driver sizes, which are some of the most comfortable and ergonomic hex wrenches we've ever used, we decided to bring you these features in the common 5mm size. Features include an ergonomic dual-density screw driver handle for comfort and control, an extra long hex key for exceptional leverage, a second ball end for quick and easy installation or removal, and heat-treated S2 tool steel construction for the ultimate in strength and lasting performance. Backed by Pedro's lifetime warranty.