High quality Made of high grade metal material, which is sturdy, durable, anti-rust and corrosion resistant, durable and sturdy, having long service time. It is a type of fastener used in a shaft slot of watch to prevent the axial movement of parts on the shaft. Suitable for watch makers and watch repairing workers to use. Kit of parts for watchesAssorted 10 different sizes of tubes and pins, can meet different using needs. A complete range of watch parts of different sizes is an indispensable tool for watchmakers and watch repairers. Including 10 sizes in total, meeting your different demands. Wide range of uses Tubes and pins are designed for connecting, linking the strap. Easy to use, durable and economical. Ideal for watch repairers, watch manufacturers or amateurs. It can be used as a professional tool for maintenance personnel or at home to save on maintenance costs. Equipped with a container Come with a plastic storage box, easy to carry and store, very convenient.