Features: Screw Press Studs: These screw press studs will come in a three parts: cap, socket, and screw. The screw cap size is approx.15mm/0.59inch wide. Stainless Steel Screws: These screw on press studs are made up of quality copper & stainless steel. It does not rust and stain easily with water contacts. Heavy Duty Studs:These screw press studs are made to use for heavy duty. These studs are rustproof, non-corrosive and still lightweight for easy to use. Snap Fasteners: These versatile screw press studs are used as replacement as well as for marine grade and suitable for all exteriors applications usage. Versatile Screw Press Studs Sets: These screw press studs are widely used for DIY activities, art crafts, handbags, caravas, and also boat cover, etc. Specifications: Material: Copper+Stainless Steel Color: As The Picture Shows Package Weight: approx.140g Size: approx.1.5cm/0.59in Package Includes: 30 Sets Screw Snap note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!