D sound muffler-- these d dampeners pads are made of Silica gel, flexible, and it can be used for a long time.Silica gel d silencers-- provides volume reduction and will not drastically alter the d s feel. professional and practical to use.D mute cushion-- it can be given as a gift to your friends who are learning to play d s. they will definitely be very happy.D pads-- no odor, durable, flexible, and it can be used for a long time. you deserve to have one.Dampener for-- a for a d mer to practice at home without having to worry about volume is not controlled. size: The single black dot is about 3.3 x 2.6 x 0.3cm, the curved version is about 16 x 2.5cmMaterial: Silica gelcolour: Black Package Contents: 12 x black dot style Silent pad2 x arc style Silent pad Only the above package content, other products are not included.Note: Light reflection 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.