Increase the durability of the cushion and prolong the life of the d head, including two patches to avoid of the patches from weathering due to frequent use. Effectively prolong the durability of d skin, improve the timbre of bottom d , and increase the texture of sound quality. It can be used for single pedal and double pedal of d set. The product is made of good material, made of bass d patch, soft and tightly fitted. Easy and quick installation, it is a good replacement accessory for replacing old and damaged products and the installation is convenient and quick, without too many complicated operation steps, and the structure is firm and stable. Used to take off the overtone of the d , make it more perfect, and avoid the d surface from pedal fatigue. The replacement effect is good, and the use effect of the inst ent is not affected. Colour:White/Black Material:PET Size: 11 x 11cm/10 x 18cm Package Contents: 2 x Bass D Patches 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.