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 photos show the KUN rubber after replacing the deteriorated one. The tubes are made of American rubber (raw rubber). Sold in sets of 4. If you would like to purchase multiple sets, please let us know in the comments before purchasing. This product is for 4/4 size KUN old type claw rubber replacement. (Not an official product) *It is unknown whether there is an official product. We do not know if it fits other fractional sizes or other manufacturers' shoulder rests. If the rubber deteriorates, your precious violin may slip and fall, so we recommend replacing it early. It is slightly longer or cut just right, so please 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's circumstances.