Just a washer, but a washer nonetheless... Please take this opportunity to hear the difference for yourself. Thank you for viewing. This is an original bolt/rod washer, new and unused, in a set of 20. Cast without burrs, the inner and outer circumferences are chamfered, with a glossy finish on one side and a hairline finish on the other. You can choose the loosening prevention effect depending on the direction you install it. Suitable for snare drums, as well as percussion instruments such as concert toms and concert bass drums. Typical feedback from users who have purchased these include: ① Improved sound quality with better clarity and crispness. ② Overtones became pleasant, and the snare drum itself resonated more. ③ Added a beautiful high-frequency range, resulting in a more usable sound. ④ The washer's high density and mass have a positive impact on the sound. ⑤ The sound of open & closed rimshots is satisfying. ⑥ Due to the material's properties, the tension bolts are less likely to loosen even with hard hits. ⑦ The best quality compared to brass washers previously released by multiple manufacturers. ⑧ Compatible with Sonor's minus-head bolts/rods, which is appreciated. Brass has excellent acoustic properties and is one of the representative materials for various wind instruments and, of course, percussion instruments. Looking at snare drums, one reason 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 improve it than replacing the hoops, and you can definitely feel the change. Please note that we are unable to accept requests for price reductions due to rising prices and raw material costs. Thank you for your understanding.