Durability and : our twist lock fasteners are made from quality metal giving them durability and the ability to withstand the harshest marine environments; The included mounting screws are made from stainless steel, ensuring that they remain sturdy and rust for a longer period of time Complete Package: comes complete with 20 sets of marine grade twist lock fasteners ; The provided tools make sure your fasteners are securely installed, providing you with the peace of mind that your canvas remain in place Secure and Tight Lock: our canvas twist lock fasteners are designed to provide a secure and tight lock; This ensures that your fasteners remain in place without accidentals loosening, thereby protecting your marine canvas snaps and fasteners Easy Installation: our turn button twist lock fasteners come with stainless steel screws and washers included in the package; The inclusion of these items makes the installation process straightforward; Known also as fastener and curtain eyelet fastener, this is the nice solution for your fastening needs Wide Range in Application: apart from securing canvas eyelets, these versatile canvas fasteners can be applied for tarp grommet fasteners and twist screw directional fastener applications; Their versatile nature makes them a valuable addition to any toolkit color: silver Material: Metal Package Contents: 20*Twist Lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.