Replacement rubberized cup for K&M (UMI/Conn-Selmer) trombone stands model 14985 (our 030080), 14990 (our 074516), 452/14991 (our 032216). This is a combination plastic unit with a thick rubberized covering. Does not include the knob (070878) or friction/locking parts (123362, 123363) that complete the assembly. See diagram below.