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, brand new and unused, with 20 pieces included. It's 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 way you install it. You can use it on snare drums, as well as toms and bass drums. Typical feedback from users who have purchased these include: ① Improved clarity and attack, enhancing the sound quality. ② Overtones became pleasant, and the snare drum itself started to resonate more. ③ Added beautiful high frequencies, transforming the sound into something usable. ④ The washer's high density and mass seem to positively influence the sound. ⑤ Open & 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, the build quality is the best. ⑧ It's great that it also fits Sonor's minus-head bolts/rods. 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 Super Ludwigs and old Radio Kings are favored is thought to be the influence on the sound from 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.