Specifically designed for the fixed gear rider. 7-function fixed-gear multi-tool. Made from 5mm thick heat-treated tool steel for strength and long-lasting performance. Features 5mm hex, 8, 9, 10, and 15mm box end wrenches, lock ring wrench, and bottle opener. 2014 model features a new 4mm/5mm hex bit in a rubber holder. Includes two M5 custom wing nuts for bottle braze-on mounting and tool free removal.