Very common King valve felt repair kit. This soft kit contains genuine Conn-Selmer components. Finger button, Top Cap Washers, & Stem Felts (.196 thick & .094 thin). Includes two water key corks. Fits many King instruments, including cornets, trumpets, Kings 3B, 2166, 1130 Flugelbone, 2166 valve trombone (and many others). Not for Stradivarius, contact me if you wish to verify your model's fit.