There are a number of ways to fix loose cups (saradō) on a kendama, tape, paper, or even glue. We believe this is one of the better ways since it compresses the band when inserted and is also completely reversible. Bands may be doubled over, used in multiples, or cut in sections depending on the desired result and looseness of the cups. These bands not only help loose cups but can be used to shorten the kensaki (tip of the ken) by raising the cups (saradō). See video below for help on how to install.