17.5mm x 2.54mm with an 11.1mm hole.
20Pcs Yootones Trumpet Valve Felt Washers Cushion Trumpet Top Cap Felt Pads for Trumpet Replacement Musical Instrument Accessory (Black)
20Pcs Yootones Trumpet Valve Felt Washers Cushion Trumpet Top Cap Felt Pads Compatible with Trumpet Replacement Musical Instrument Accessory (White)
Konig & Meyer Rubber Top Cap (16mm) for Various Stands - Free UK Shipping - K&M
BESSON SOVEREIGN BARITONE TOP CAP FELT (SET OF 3) - (WHITE, BLACK, GREEN OR RED)
BESSON SOVEREIGN EUPHONIUM TOP CAP FELT(SET OF 4) - (WHITE, BLACK, GREEN OR RED)
GENUINE YAMAHA TOP CAP FELT - BLACK (SET OF 3)
