The item is a set of 360pcs professional watch band strap link pin spring bars in 18 different sizes, which are made of high-grade stainless steel material for durable to use, and suitable for men and women to repair watches. Those spring bars with double flange are specially used for metal watch band strap links, and are kept in a transparent plastic box for keeping the different sizes separated and easy to access. Features - Brand: NICERIO. - 360 pieces of the stainless steel watch band link pin spring bars in 18 different sizes in one set will be sold together. - - Material: durable stainless steel. - Diameter: about 1.5mm. - and 360pcs Stainless Steel Watch Band Strap Link Pin Double Flange Spring Bars. - 360pcs watch band strap link pin spring bars in 18 different sizes, and each size includes 20 pieces: 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm. - Stainless Steel watch spring bars with double flange, used for metal watch strap links. - Those watch link are kept in a transparent plastic box for keeping the 20 different sizes separated and easy to access. Package list: 360 * NICERIO Stainless Steel Watch Band Strap Link Pin Double Flange Spring Bars in 18 Different Sizes - 6mm-25mm (Silver) 1 * NICERIO Transparent Plastic Storage Box