Features: brand new and high quality Bicycle bottom bracket installation tool spanner. Designed to fit externally ringed bottom brackets. In the process of installing the bottom bracket, you should distinguish between the left and right, align the teeth, and screw it in by hand. If you can’for t twist it, use the tool. When the bottom bracket is not fully inserted and the tool can’for t be screwed, it is recommended to stop and check whether it is installed. correct. Do not use strong force to cause damage to the bottom bracket or frame. Application: For integrated bottom bracket and integrated bottom brackets of other brands. When disassembling and installing the crank cover, please loosen the two crank screws next to it first, and then use the crank cover tool to remove the cover. This will be very easy. Specifications: Material:Stainless Steel Length:Approx.21cm/8.27in Net Weight:187g Package Includes: 1x Bicycle Install Spanner note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.