Description: Professional Design: Bottom bracket wrench has stable characteristics and high reliability, specially designed for mountain bike and road bicycle hollow crankset disassemble. Material: Bike bottom Bracket Wrench is made of aluminum alloy, high hardness, tough and durable, with long service life. Common Type: Our bottom bracket wrenches are suitable for most types of bottom bracket on the market generally the type used for any mountain road bikes. Close Loop: This wrench uses a closed loop design, in case you don't have to worry about opening deformation. The straight tooth shape design makes it a high bite rate. Fine workmanship: Through the precise wire cutting and frosting and polishing process, the bicycle wrench is tightly engaged during use, and the teeth are not easy to slip, which well protects the bottom bracket. Specification: Material: aluminum alloy Colour: Black Size Chart: Size: 25x6.5cm/9.84x2.56inch Package Includes: 1 Piece Bottom Bracket Wrench Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!