Thank you for viewing. These cast washers are free of burrs, with chamfered inner and outer edges. One side has a polished finish, and the other a hairline finish, allowing you to choose the desired loosening prevention effect depending on the orientation when installed. The set includes a total of 40 washers: 20 brass washers and 20 stainless steel washers. They can be used on snare drums, toms, and bass drums. You can try both brass washers, which are characterized by a warm, full, and sustained sound, and stainless steel washers, which are characterized by a sharp, crisp, and speedy sound. If you are dissatisfied with your drum sound, you can easily and affordably experience a definite change compared to replacing the hoops. Currently, due to the global price increase of the main raw materials, we kindly ask that you refrain from requesting a price reduction. Thank you for your understanding.