240 Pieces Stainless Steel Marine Use Canvas & Upholstery Boat Cover Snap Buttons [1] Product type: High Quality Marine Canvas & Upholstery Boat Cover Snap Buttons Snap Buttons[2] Meterial: Snaps are made of brass and nickel plated for added durability. The bolts are made of 304 stainless steel, which provides good corrosion resistance in bad conditions such as high temperature, cold weather, and high humidity areas. They have excellent rust resistance and excellent oxidation resistance, which can ensure a long service life and prolong the life of screws[3] feature: pins are available to be fixed on screws or cloth studs for mounting on hard surfaces. Snap buttons with rugged construction provide a secure grip that will remain secure for years of use with all stainless steel parts, excellent snap action and strength[4] Application: These button snaps can be attached to wood, plastics and fiberglass, they are strong and great for both indoor and outdoor use, with excellent rust resistance in saltwater applicationsSpecification: Color: SilverMaterial: Copper + 304 Stainless Steel Screw Size: 15x10mm(0.59 inch x0.39 inch), 15x15mm(0.59 inch x0.59 inch)Button Cap Diameter: 15mm/0.59 inchPackage Contents:80pcs * Socket80pcs * Cap40pcs * Screw (10mm)40pcs * Screw (15mm)2 * Anvil2 * Tool Kit2 * Storage BoxOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.