Marine Grade, Canvas Boat Cover, Snap Button, Fastener Kit (silver). Features: High Quality Marine Grade Canvas and Upholstery Boat Cover Snap Button Fastener Kit Snaps Are Made of Brass and Nickel-plated for Added Durability. The Screws Are Made of 304 Stainless Steel cold Weather, and High Humidity Areas. Studs Are Available for Clamping Onto Screw. Canvas Studs for Mounting on Hard Surfaces. The Snaps with Heavy-duty Construction Assures a Firm Grip. These Button Snap Studs Can Be Attached to Wood, Plastics and Fiberglass. Specifications: Color: Silver Material: 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 Inch Package Contents: 40pcs * Socket 40pcs * Cap 20pcs * Screw(10mm) 20pcs * Screw(15mm) 1 * Anvil 1 * Flaring Tool 1 * Storage Box . We are an international based seller that will ship your order from abroad, please at least a minimum 14 working days for delivery right now due to the ongoing delays in shipments globally.