High quality material: the push button is made of brass and stainless iron, suitable for indoor and outdoor use, anti-rust and anti-corrosion and oxidation to ensure long-term use and extend the life of the screw. Size: screw length 13x10mm, buckle 13.4mm, cap 15mm, this size can handle most situations. Enough quantity: 50 pieces per piece, enough quantity to meet your different DIY needs. Product features: screws can be used to clamp screws or canvas screws to install them on a hard surface. Heavy duty snapshots ensure a firm grip and stay secure. Widely used: all metal parts, excellent snap effect and holding power. Range of application: tensioning snap buckles are ideal for boats, trailers, cars, tarpaulins, covers, shoe soles, awnings and garden furniture. Product Details: Material: The cap is copper, screw material is iron. Process treatment: Coating protection layer. Durable: No rust. Practical: No deformation, easy to use. Read more Size: Button cap diameter: 15 mm Screw length: 10 mm Screw Diameter: 13.4 mm Read more Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.