With a simple twist to engage with Ninja Master series cage this weatherproof tool box contains a 16 function metal mini tool for basic repair & maintenance.* The chain tool is compatible with single & multi-speed chains up to 12 speed NOT including Campagnolo hollow pin chains.TOOLS2 / 2.5 / 3 / 4 &40;L-type&41; / 5 / 8 mm Allen wrenches 6 mm hex tool bit T10 / T15 / T25 Torx wrenches 2 Phillips / flat head screw drivers 14G / 15G spoke wrenches Cr Mo steel chain tool* & chain hook TOOL MATERIALChrome vanadium steel TOOL BODY MATERIALCarbon fiber injection COMPATIBILITYNinja Master cage series Ninja Universal Bracket WEIGHT92 g / 3.24 oz &40; Ninja T16+&41; 40 g / 1.41 oz &40; Tool Box&41;ADDED FEATURELeverage added on 4 / 6 mm Allen wrench L-type wrench