Jagwire cable ferrules 45mm brassthese sealed end caps feature a small rubber o ring in the base to help prevent dirt and moisture from entering the housing they are made from a durable brass and can be fitted to the end of 45mm gear housing to protect your inner cables and keep your shifts running smoothly for longer features sealed end caps feature a small rubber o ring in the base to help prevent dirt and moisture from entering the housing material brass size 45mm purpose shift housin