FAHRER Chain Guard Sleeve The Sleeve is as simple as it is efficient. It consists of a short piece of plastic tube which is flexibly attached to the chain stay with a tape. The tube floats on the chain and moves with it, so that the HÜLSE is just as suitable for derailleurs as for hub gears and on e-bikes with a mid-motor. For only 22 grams more weight this results in good trouser protection without compromising the appearance of the bike too much. The HULL also protects the chain from spray from the rear wheel, reducing chain maintenance. Length: 25cm