Quick and precise assembly and disassembly of various types of bottom brackets. Includes 14 tools, 7 of which are for e-bikes. With four guides: 22/24 mm (Sram GXP), 24 mm, 29 mm (Sram DUB), 30 mm. Tools feature a 1/2" square drive for use with torque wrenches DV-12200 or with DV-10500 and adapter DV-10800. Guides are made of aluminum, precisely CNC manufactured, anodized, and laser engraved.