Just a washer, but a washer nonetheless... Please take this opportunity to hear the difference for yourself. Thank you for viewing. This is a set of 20 brand new, unused original washers for bolts and rods. They are cast without burrs, with chamfered inner and outer edges. One side has a glossy finish, and the other a hairline finish, allowing you to choose the anti-loosening effect by the way you install them. They can be used on snare drums, as well as toms and bass drums. Typical feedback from users who have purchased these washers includes: ① Improved clarity and attack, resulting in better sound quality. ② Overtones became more pleasant, and the snare drum itself resonated better. ③ Added a beautiful high-frequency range, transforming the sound into something usable. ④ The high density and mass of the washers themselves have a positive impact on the sound. ⑤ Open and closed rimshots sound great. ⑥ Due to the material's properties, the tension bolts are less likely to loosen, even with hard hits. ⑦ Compared to brass washers released by multiple manufacturers in the past, these are the best made. ⑧ They are compatible with Sonor's minus-head bolts and rods, which is very convenient. Brass has excellent acoustic properties and is used in guitars and basses for sustain blocks, saddles, bridge bodies, tuning pegs, nuts, etc. Looking at drums, one reason why vintage instruments like 60s Supra-Phonics and old Radio Kings are favored is thought to be the influence of brass hoops and washers on the sound. If you are dissatisfied with your drum sound, this is a more affordable way to improve it than replacing the hoops, and you will definitely notice a change. Please note that we are unable to offer discounts due to rising prices and increased raw material costs. Thank you for your understanding.