A Shubb Capo is made to last a lifetime. But with long and hard use the rubber or plastic parts can begin to show some wear, and eventually effect the proper functioning of your capo. But you don't throw away a Mercedes when it needs new tires!FeaturesReplacement sleeve for model 2 or 3 (nylon string or 12-string)2.25" also fits C6b, dobro capo. Extra long so it can also be trimmed to work with shorter 6 string and banjo capos.The Delrin cap can also be a retro-fit for older capos that did not include the Delrin cap.