The Topeak Survival Gear Box is a handy little tool box, perfect for when you don't want to cart 101 tools around with you. The Survival Tool Box has everything a decent multi tool has, such as Allen keys, wrenches and a chain tool*; then it goes that step further by including tyre levers, a chain pin breaker, and a puncture repair kit, as well as a neat little compartment for spare chain links. Each tool is individual instead of being fastened onto a bike multi tool which is useful if you need to use more than one tool at a time.All this is packed into a custom protective case that mounts to any round tube or seatpost (25 mm - 33 mm) with a secure quick release strap.*The chain tool is compatible with single and multi-speed chains up to 12 speed, NOT including Campagnolo® 11 speed hollow pin chains.Topeak Survival Gear Box FeaturesAdded Features: Secondary chain link fence, Chain pin breaker, Air release button, Sand paper, Mini hammer, 2 Chain pins & 2 links compartment, Self-tightening toolAllen Wrenches: 1.5 / 2 / 2.5 / 3 / 4 / 5 / 6 mmChain Hook: Stainless steel wireChain Tool: CrMo steelDisc Brake Spacer: Engineering grade polymerFunctions: 30Open Wrenches: 8 / 10 mmScrew Driver: #2 PhillipsSize: 10 x 4.6 x 3.5 cm / 3.9” x 1.8” x 1.4”Socket Hex: 8 mmSpoke Wrenches: 14G / 15G / Mavic® M7 / Shimano® compatibleTyre Levers: Two engineering grade polymer leversTyre Repair: Glueless patchTool Material: Chrome vanadium steelTORX® Wrenches: T15 / T25Weight: 233 g / 8.20 oz (w/ Clip)