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, but if you want more, please let me know the length and number (up to 8 total) before purchase or within 1 hour after purchase. If you need more than 8 pieces, I 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 type watches. They are also durable with NATO nylon straps. Useful as repair and replacement parts for junk watches. If listed in each brand category, they are not genuine products of that brand. 【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 belt 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, 28mm are available in large quantities. Other dimensions may not be available. Available in single units] A spring bar removal tool is also available for an additional 200 yen per piece. If you need additional items, I will create a separate listing, so please comment before purchasing. I am not an expert. I do not know the pin shapes of spring bars for each watch brand. Please check the product images and details carefully. I cannot judge even if you ask questions about size and shape, so please make sure to check yourself before purchasing whether it can be used. 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 me know if you are using them with a buckle. We strive for prompt shipping, but delivery has become very slow recently due to standard mail. Also, it will be delayed if it falls on weekends and holidays. We will accommodate faster shipping and anonymity (+150 yen).