This is a standard part for reducing the stiffness of Steinberger tuning knobs. I purchased it from a well-known electronics parts store in Akihabara, so I think the quality is good; it slides smoothly. It was perfect for Spirit by Steinberger. Basically, I can ship within 24 hours, but it may take a little longer depending on the timing, so I have set it with some leeway. If you contact me in advance, I can ship it earlier, so please let me know if you need it urgently. I tried setting two of each, and it moved smoother than when using one each. Please note that there are individual differences and precision in the bridge. *This is an offer for washers only. 12 pieces included 3 x 8 x 0.5mm This is just a reference, as there are individual differences in the models. I don't think there will be any problems, but I haven't confirmed if it can be used for all other Steinberger series. [Shipping] Shipped in a small plastic bag. Although it is new and unused, there may be minor scratches, scuffs, and slight dimensional differences. Please purchase only if you understand this. Electric guitar Steinberger Spirit R-trem TransTrem ■ Instant purchase without comments is OK ■ No returns to prevent swapping ■ We will try to ship within the deadline, but shipping may take time depending on the situation ■ No claims, no returns