Twist lock fasteners are made from marine-grade nickel-plated brass, which makes them extremely durable and able to withstand the harshest marine environments. The included mounting screws ensure that they remain strong and rust-resistant for a longer period of time. The kit comes with 10 sets of marine-grade twist lock fasteners. Our provided parts make sure your fasteners are securely installed, so you can relax knowing your canvas will stay put. The canvas twist lock fasteners are designed to provide a secure and tight lock, so you can be sure that your fasteners will remain in place without any accidental loosening. This protects your marine canvas snaps and fasteners, so you can enjoy your boat with peace of mind! Also known as Murphy fasteners and window eyelet fasteners, turn button twist lock fasteners are a simple and effective solution for your fastening needs. Apart from securing canvas eyelets, these versatile canvas fasteners can be applied for tvarious outdoor applications, such as boats, sailboats, RVs, dinghies and caravans. Colour:As Shown Material:alloy steel Package Contents: 10set * twist lock fasteners 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.