- Cantilever Boss Extractor For the easy removal of Cantilever bosses from the frame or fork. * Art Nr: 720247 * EAN Code: 8590831432917 * 9mm wrench, 3/8" square drive When you install disc brakes on your frame, the cantilever bosses are no longer required. This Cantilever boss extractor easily removes them from the frame or fork.
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