Protocol Bicycle Multi Tool: 15 functions; multi tool for bikes with multiple hex keys to fit any size bolt or screw, fold out phillips and slotted screwdrivers, includes carrying case Tighten bike seats, attach water bottle holders, dismantle bikes and more 15 function tool contains 6 hex key wrenches (2mm,2.5mm,3mm,4mm,5mm,6mm), socket adapter, 3 sockets (8mm,9mm,10mm), 3 socket wrenches (8mm, 10mm, 15mm), spoke wrench (14GE), Phillips screwdriver, slotted screwdriver Must have repair and maintenance tool for any bicyclist High quality durable nylon carrying case with attachment loop Tools are made of steel; Folds up to 3.5"L