Description: Due to the frosting process, chrome plating and hardening heat treatment, it is sturdy and can be used for a long time. The 20 straight square teeth fit and exert force at the same time, which do not damage to the keyway of the bottom bracket and is easier disassembly and assembly. Made of high carbon steel material, the product is durable. The length of the removal tool sleeve is 5.5cm, the width is 3.15cm, and the height is 3.15cm. The length of the anti-drop device is 7.7cm, the width is 2.1cm, and the height is 2.1cm. The square hole and spline bottom shaft are compatible with 20 key slots (16 key slots downward compatible), and the longest compatible shaft is 129mm. Item Name: Bicycle Bottom Bracket Remover Material: High Carbon Steel Teeth: 20 Teeth Process: Matte Process Features: Durable, Easy to Use, Strong Attributes: A: Bottom Shaft Removal Tool Sleeve, B: Anti-drop Device Size Details: A: 5.5cm x 3.15cm x 3.15cm/2.17" x 1.24" x 1.24" (Approx.) B: 7.7cm x 2.1cm x 2.1cm/3.03" x 0.83" x 0.83" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bicycle Bottom Bracket Remover