Unior 1671.6/2BI Campagnolo ultra-torque Cartridge BB tool with hAndlematerial: special tool steel, hardened and tempered How to use the tool: The tool is composed of a wrench, screw with nut and handle. To use, put the wrench onto the bottom bracket nut, so that the screw is inserted into the bottom bracket. This prevents the wrench from slipping and damaging the bottom bracket nut when applying pressure. Your work is made easy by the 350 mm long handle with a two component ergonomic sleeve. An additional part on the