Description: - headset bottom bracket is perfect tool for helping you to replace your bike old torn part, easy to use, convenient to install. - Quick release design and standard construction for fast installation and removal of tool. - Simple easy to use and effective for headsets and press fit BB without any problem. - Mechanic press tool works very well for press-in bottom brackets and head cup installations. - Ball Bearing Design makes it more stable while using and would not hurt your bike frames.Specification: - Material: Aluminum Alloy, Steel - Size: 255x210x55 mm / 10x8.3x2.2 inchPackage Includes:1 Piece Headset Installation Tool:Please allow a slight measurement error.Hope for your kind understanding and have a nice shopping day!