Features:1. The watch pins is used for connecting the watch and the strap, which is replaceable, super convenient.2. It is divided into 20 grids, each grid is about 15, and a box is about 300 in total, can be used for a long time.3. There are 3 different sizes 1.3-1.78mm watch pins to meet different watch sizes.4. They are a must have for watchmakers and jewelers who work on watch bands and watch clasps.5. Made of high-quality metal, sturdy and durable, can stand long-term use if it is well cared.Specification:Item Type: Watch PinsMaterial: MetalOptional Type: 1.3mm / 0.05in, 1.5mm / 0.059in, 1.78mm / 0.07inPackage List:1 Box Watch Pins