Product Type: High quality marine grade canvas and tapestry. Material: Brass snaps and nickel plated for durability. The screws are made of 304 stainless steel, which offers good corrosion resistance in harsh environments such as high temperature, cold and high humidity areas. They have excellent rust resistance and excellent oxidation resistance, which can ensure a long service life and extend the life of the screws. Contents: In this kit, we provide 20 bushings and caps each, 15x10mm and 15x15mm each, 10 screws each and 2 adjustment tools in a clear plastic box, convenient for your storage and use. Features: Pins are available to attach to screws or canvas pins to attach to hard surfaces. Snaps with heavy-duty construction provide a firm grip that will remain secure even after years of use. All stainless steel parts, excellent pressure effect and holding power. Application: These snaps can be attached to wood, plastic and fiberglass, they are strong and ideal for indoor and outdoor outdoor use, with excellent rust resistance in saltwater applications. Description: Made of high quality metal material, it is excellent for stamping tools and fasteners tools. This screw box with snaps is strong, heavy and good quality. They are strong, durable, rustproof and corrosion resistant. Features: Color: Silver. - Button diameter: 1.5 cm. - Sleeve diameter: 3/8". - Material: stainless steel + copper. - Adjusting tool length: 5.8cm. - Screw length: 10mm, 15mm - Quantity: 20 screws, 20 sockets and 20 caps, 1 set of snaps.