Bone nut for bass guitar, for 43mm. Length: 43mm, Height: 6mm, Thickness: 3.5mm Flat bottom 38mm versions are also available. I also have many other guitar-related items for sale. Please take a look at my other products if you'd like (*^^)v Thank you! (*^^)v Shipping is basically by regular mail (no insurance), but postal accidents occasionally happen. For an additional 60 yen, you can upgrade to Click Post with tracking. Please request this via comment. 【Notes】 ・Shipping is closed on weekends and holidays; items will be shipped on the next business day. ・In principle, items can be shipped the same day if payment is received by 3 p.m. ・All items are shipped free of charge. ・Items are in stock, so you can buy them immediately without commenting. ・Items will be sent in simple packaging. The shipping method varies depending on the product, so please check. ・If you purchase multiple items, there will be a discount on shipping costs. Please contact me via comment before purchasing. ・The color may differ slightly from the actual product due to lighting conditions and monitor differences. ・I try to answer questions as quickly as possible, but there may be delays depending on the timing, so please understand. ・Initial defects will be exchanged or refunded, so please contact me before leaving a review. I may not be able to respond after a review has been left.