It adopts high strength chromium-molybdenum steel, which has been quenched hardened, has high hardness. Application: One end is suitable for installation removal of for DT Swiss planetary ratchet hub compatible with 240S 240 340 350 440 540 other planetary ratchet finished wheel sets; the other end is used for installation removal of DT hub EXP ratchet wheel, suitable for DT new EXP special upgrade 54T ratchet DT240\/180 hub, Not applicable to older hubs. Two-in-one tool, used with 22mm open-end wrench or adjustable wrench, clockwise tighten, counterclockwise loose. After CNC turning polishing, it is round smooth, without hurting the hub or h. Compact size easy for use, great bike removal tool. Colour: silver Material: steel Size: 35x27.5x27.5mm Package Contents: 1 Rear hub removal tool Only the above package content, other products are not included. Note: Light reflection different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is and\/- 1-3cm.