These are spring bars with a diameter of Φ1.8mm, slightly thicker than Φ1.5mm (standard Φ1.78 stainless steel). [Over 20,000 sold!! Price remains the same for up to 8 pieces. 4 pieces will be sent without a comment. If you want more, please let us know the length and quantity (up to 8 total) before or within 1 hour after purchase. If you need more than 8 pieces, we will create a separate listing for an additional 30 yen per piece.] These are used in waterproof watches (military, divers, etc.), but can be used in most spring bar watches. They are also durable for NATO nylon straps. Useful as repair and replacement parts for junk watches. If listed under a brand category, they are not genuine brand products. 【VERY IMPORTANT】This product is: Φ1.8 x Lug width dimension mm x 4 pieces This is NOT the total length of the spring bar. Please measure the lug width (the width of the strap attachment on the watch body) as shown in the second image. If you need other lug widths, please check the following and see if they are available. #sierraspringbar We can flexibly accommodate spring bars of dimensions other than those listed, so please comment. Only Φ1.8mm spring bars are sold. [For lug widths 8-26, 28mm, in 1mm increments. 13-24, 26, and 28mm are available in large quantities. Other dimensions may not be available. Available in single units.] A spring bar removal tool can also be added for 200 yen each. If you need additional items, we will create a separate listing, so please comment before purchasing. We are not experts. We do not know the pin shapes of spring bars for each watch brand. Please check the product images and details carefully. We cannot make judgments on size and shape questions, so please confirm whether they can be used by yourself before purchasing. Cannot be substituted for spring bars with a diameter of 2.2mm or more. G-SHOCK spring bars have a Φ2mm diameter, but these can be used as a substitute. Please let us know if you are using them with a buckle. We strive for prompt shipping, but delivery is very slow recently due to standard mail. Also, delivery will be delayed if it includes weekends and holidays. We will accommodate faster shipping and anonymity (+150 yen).