Thank you for viewing! Thanks to you, many customers have purchased our products, and we have a track record of high ratings. We are proud that our rubber is the most affordable and has a high holding power! The photo shows the KUN rubber after replacing the deteriorated one. Photo 5 We also have black rubber from Bon Musica (Germany), so please comment if interested. The tubes are made of American rubber (raw rubber). Sold in sets of 4. If you want multiple sets, please let us know in the comments before purchasing. This product is for 4/4 size KUN old type claw rubber replacement, but repeat customers have informed us that it can also be used for 3/4 size. (Not an official product) *It is unknown whether there is an official product. We do not know if it is suitable for other fractional sizes or shoulder rests from other manufacturers. If the rubber deteriorates, your valuable violin may slip and fall, so we recommend replacing it early. It is slightly long or cut to the exact size, so cut off any excess with scissors. We will ship by regular mail, but we are not responsible for any postal accidents. (Regular mail is not delivered on weekends and holidays) Due to the post office #kun replacement rubber #Bon Musica replacement rubber black Germany