Gibraltar Hardware - 4" Port Hole Protector Rings, Two-Piece Snap-On Design for Bass Drum Head Protection, Ideal for 4-Inch Ported Drum Holes

The Gibraltar SC-GPHP-4C 4-Inch Port Hole Protector is the ideal solution for safeguarding your bass drumhead’s ported hole. Designed with a sleek chrome finish, this protector provides both functionality and style.