One end is suitable for installing and removing the tower base of the planetary ratchet hub compatible with 240S 240 340 350 440 540 and other planetary ratchet wheelsets;. The other end is used to install and remove DT EXP ratchet hub, suitable for DT New EXP Special Upgrade 54T ratchet for DT 240/180 hub, not suitable for old style hub.
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