The HERCULES Mute Holder HA100 is designed for cornet, trumpet, trombone, or French horn mutes.Hercules HA100 Mute Holder For 4 MutesRM 90.00PriceQuantity*Add to CartFeatures Rings are covered with Specially Formulated Foam Padding. HA100 has 270° of ring swivel. Designed for cornet, trumpet, trombone, and French horn mutes. Attaches to most music and microphone stands with a shaft diameter of 8 mm - 30 mm (0.31" - 1.18"). Specs Weight: 0.5 kg (11 lbs.) Load Capacity: 5 kg (11 lbs.) Ring Diameters: <br />74 mm (2.92") x 1<br /> 63 mm (2.48") x 2<br />47.5 mm (1.87") x 1