The Wolf Tooth Encase System 14 Function Multi Tool allows you to make various simple repairs whilst riding with just one tool. An 8mm hex head has a 4mm insert to fit each of the eight attached hex bits. With its slim design, this multi-tool can be stowed inside bicycle handlebars using an EnCase System Storage Sleeve or used as a mainstay on any home workbench. Wolf Tooth Encase System 14 Function Multi Tool Features 14 functions (spoke wrench; valve core wrench; flat head #3.5; Phillips #2; 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, and 8mm hex; and T10, T25, and T30 Torx compatible) Magnets & O-rings keep all parts in place Ball detent swivel head helps access hard-to-reach places Handle doubles as breaker bar for extra torque when head is bent Store in handlebar with an EnCase System Storage Sleeve (sold separately) Magnet on the bottom of tool for convenient storage on steel bike stands (or refrigerators) Wolf Tooth Encase System 14 Function Multi Tool Compatibility Fits most mountain handlebars and road handlebars when combined with the storage sleeve. Works with both carbon and aluminum handlebars. Will not fit ergonomic-style road bars with extra bends in the drops. Minimum internal bar diameter is 17.5mm. Wolf Tooth Encase System 14 Function Multi Tool Specifications Weight: 50g Materials: 7075-T6 Aluminum, CrV steel