It is used for office stationery, leather goods, apparel, arm belts, and similar applications. It provides functions including combination, connection, fixation, and wear resistance. When used for binding booklets, photo albums, or similar items, first drill a hole at the desired position—the hole diameter should be 0.5 mm larger than the nut rod diameter of the binding screw. Select a screw with a nut rod length appropriate for the thickness of the item being bound. Insert both ends into the holes to connect and secure. APPLICATION: Suitable for thin albums, decorative bags, leather belts, sandals, boots, leather bags, helmets, and various art, leather craft, and DIY clothing projects. INSTRUCTIONS: Drill a hole 0.5 mm larger than the nut rod diameter. Place the screw and nut on opposite sides of the material, then use an appropriate tool to tighten and secure. ADVANTAGE: Precision-machined threads; made from high-quality stainless steel with anti-rust properties. Colour: silver Material: stainless steel Package Contents: 10 x single screws (M6 x 20mm) 10 x pair lock nuts (M6 x 18mm) NOTICE: When using post screws, the total thickness of the material being secured must be less than the combined length of the screw rod and nut rod; otherwise, proper locking cannot be achieved. The package includes only the items listed above. Note: Due to lighting conditions and display variations, the actual product color may differ slightly from images shown. Measurement tolerance is ±1–3 cm.