Hex wrench: The longer hex wrench provides more leverage for easier use. 5mm on one end flat screwdriver on the other end for versatility. Independent chain cutter: The cutting head has a floating pin which self aligns to the chain in order to prevent pin breakage. Chain retainer: Holds the chain together while working on it. Unique universal chain tool, Compatibility: HGUG most other standards, Chain cutter Chain retainer, 3 Flat wrenches: 8 10mm, 2 spoke tools: 13 15G, Detachable 5mm hex wrench 1 Flat screwdriver, Dimensions: LxW 74x42mm2.9x1.7, Weight: 57g.