Specification: This drum wrench is suitable for about 5.5mm/2.17in square mouth inner diameter.Quality Material: This product is made of high quality alloy material for durability.Safe to Use: This product is smooth and round, not hurting your hands.Convenient to Use: The thickened and widened design makes it easier to change the drumhead.Widely Compatible: Industry standard for all drums with 1/4.Specification:Name: Drum WrenchMaterial: Alloycolor:blackSize: about 49 * 55 * 5.5mm/1.93 * 2.17 * 0.22inPackage Contents:1 * T-shaped Drum WrenchOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.