These are "spring bars," parts used to attach watch straps and buckles. *Please note that the lug width options differ from those sold in sets of 4. m(_ _)m This is a great value set, only available in 8mm to 13mm. If you need 14mm or larger, please purchase the set of 4 from the listing. These are double-flanged spring bars made of stainless steel, the most standard specification for spring bars. You can choose a total of 5 spring bars from the following 6 lug widths, in any combination you like. You can choose 5 of the same size, or one of each size, or any combination. Additional spring bars are available for 100 yen per 2 pieces. ^ ^ 《Lug Widths》 8mm, 9mm, 10mm, 11mm, 12mm, 13mm *Color: All silver/nickel *Shaft diameter: All 1.50mm If you let me know your desired combination in the comments, I will create a dedicated page for you. ^ ^ Lug width is usually indicated by the width when the spring is compressed, so measure the lugs of the watch you plan to attach them to and choose the appropriate size. Due to the nature of Mercari, returns and exchanges due to incorrect lug width are difficult to accommodate, so please be very careful when selecting your size. All spring bars are brand new and unused. We will check the spring tension of the spring bars before shipping, but please understand that there may be some slight variations as they are mass-produced. To prevent rust, water damage, and dirt, they will be shipped in a small zipper storage bag ( ^ω^ ) Stainless steel spring bar Double flange silver nickel chrome