Check the listing for details. Screw Snap Fastener Stainless Steel Boat Canvas Press Stud Cover Button Kit. Condition: New. Listed at 16.05 USD. Specification: High Quality Material: Screw snap fastener is made of high quality stainless steel material/Brass Material , with good corrosion resistance, can work normally in salt water environment, strong and durable, good rust resistance. Easy to Install: Just use a phillips head screwdriver to screw into the snap easily, the cover and socket need to be nailed to the leather in turn, then hammer to tighten, after installation can be fastened with snap, very easy to operate and DIY by yourself. Wide Applications: Canvas screws can be used indoors or outdoors and are commonly used for awnings, tents, tarps, canvas, boat snaps, cushion snaps, leather, furniture, wood, pool covers, fabrics, etc. Salt water environments can also be used. Package Inculded: Material: Stainless Steel+Brass (High Quality) Color: Silver Button Cap Diameter: 15MM Screw Length: 10MM (3/8") Package Include: 50X Snap Fastener sockets 50X Snap Fastener buttons 50X Snap Fastener self-tapping screw stud 3X Tools