The striking surface is a gel pad. It is very quiet and has a small rebound, making it ideal for wrist strengthening and practicing picking up rebounds. The striking surface has some dirt, but there are no problems with use. Regarding the rear machine nut, it cannot be fixed and the nut will come off, so it is not possible to attach it to a stand using screws (even if assembled, it will fall off). There is no problem using it by placing it on a flat desk or a drum. Please consider the above before purchasing.