Professional manufacturing, do not need to be replaced frequently, it is very safe to use. Drum damper pad can effectively reduce the vibration of drum surface and change the vibration frequency. You can use a drum mute pad to overtones. This drum pad set is made of quality durable and thickened rubber material, which is oil and water resistant and has a . Features -Color:Black -Material:Rubber -Size:40.00X40.00X0.40cm/15.72X15.72X0.16in(drum pad) -Size:35.00X35.00X0.40cm/13.76X13.76X0.16in(drum pad) -Size:30.00X30.00X0.40cm/11.79X11.79X0.16in(drum pad) -Size:25.00X25.00X0.40cm/9.84X9.84X0.16in(drum pad) -Size:18.00X11.00X2.00cm/7.09X4.33X0.79in(floor drum pad)9in -The volume decreases but does not change the sound of the drum. Good drum practicing tool. -A great a drummer to practice at home without having to worry about volume is not controlled. -Fine workmanship of our product ensures you a and delicate details. -You can make advantage of drum mute pads to the overtones. -You can determine the position and quantity of mute pads on demand for a sound. Package list: 4 x drum pad 4 x cymbal mute belt 1 x floor drum pad