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 has a hairline finish, allowing you to choose the anti-loosening effect by the direction 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, enhancing the sound quality. ② Pleasant overtones, making the snare drum itself resonate more. ③ Added beautiful high frequencies, transforming the sound into something usable. ④ The high density and mass of the washer itself seems to have a positive impact on the sound. ⑤ The sound of open and closed rimshots feels 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, pegs, nuts, etc. Looking at drums, one of the reasons why vintage instruments like 60s Super Ludwigs and old Radio Kings are favored is the influence on the sound due to the use of brass hoops and washers. If you are dissatisfied with your drum sound, this is a more affordable way to achieve a noticeable change than replacing the hoops. Please note that we are unable to offer discounts due to rising prices and increased raw material costs. Thank you for your understanding.