Features The Hercules Mute Holder is designed for cornet, trumpet, trombone, and/or french horn mutes and attaches to most music and microphone stands with a shaft diameter of 8 mm - 30 mm (0.31" - 1.18"). The rings are covered with specially formulated rubber foam and the holder has 270° of ring swivel. Weight: 0.5 kg (11 lbs.) Load Capacity: 5 kg (11 lbs.) Folded Size: 250 mm x 110 mm x 85 mm (9.8" x 4.3” x 3.3") Ring Diameters: 74 mm (2.92") x 1 63 mm (2.48") x 2 47.5 mm (1.87") x 1 Model:HA100 Manufacturer:Hercules