Feature:1. Stainless Steel: These watch tube friction pins are made of stainless steel. They are necessary for watchmakers. Designed to secure and connect the watch strap.2. Repair Tools: The repair tools and kits are water proof, allowing you to use them with confidence. These tools are designed with practicality in mind and are ideal for daily use.3. Included: The connection pins include 10 sizes and 2 colors: 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, and 28mm, with 10 pieces of each size. A total of 200pcs.4. Function: Designed to secure the strap in place and helps you change straps without damaging the watch. Their robust construction helps to maintain the integrity of the watch during daily wear.5. Lightweight: The watch repair accessory set is small and lightweight, making it easy to carry for watch repairs, ensuring that your watch remains functional and stylish at all times.Specification:Item Type: Watch Tube Friction PinMaterial: Stainless SteelSize: Approx. 10mm/0.39in, 12mm/0.47in, 14mm/0.55in, 16mm/0.63in, 18mm/0.71in, 20mm/0.79in, 22mm/0.87in, 24mm/0.94in, 26mm/1.02in, 28mm/1.10inQuantity: 200 pcs.Package List:200 x Watch Tube Friction Pin1 x Plastic Box