Mute - Narrow Wedge Soft Polyurethane for Piano Tuning

Narrow Wedge Tuning Mute. 90mm x 13mm x 13mm Durable polyurethane outlasts felt or rubber mutes Does not discolor copper strings Does not dry out like rubber Does not absorb dirt like felt (can be cleaned if discolored by dirt or rust) Soft, flexible elastomerized polyurethane material Lighter than felt or rubber