It is made of high-strength chromium-molybdenum steel that has been quenched and hardened for increased hardness. Application: One end is designed for installation and removal of DT Swiss planetary ratchet hubs compatible with 240S, 240, 340, 350, 440, 540, and other planetary ratchet wheelsets. The other end is used for installation and removal of DT hub EXP ratchet wheels, compatible with DT EXP 54T ratchet upgrades for DT240/180 hubs. Not suitable for older hub models. This two-in-one tool is used with a 22mm open-end wrench or adjustable wrenchtighten clockwise and loosen counterclockwise. Precision CNC machined and polished for a smooth, rounded finish that protects the hub and hands during use. Compact design for easy handling, making it a great bicycle maintenance tool. Color: Silver Material: Steel Size: 35 x 27.5 x 27.5 mm Package Contents: 1 x Rear Hub Removal Tool Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting effects and monitor settings may cause slight color variations between the image and the actual product. Measurement error allowance is +/- 1-3 cm.