Feature:1. Screw Specifications: Screw thread diameter is UNC 1/4 inch, head diameter is approx 20mm / 0.8in. Universal specifications for a wide compatibility.2. Zinc Alloy: Made of premium zinc alloy material, which is durable material,fine workmanship, rust and corrosion resistance,long service life.3. Camera Protection: Rubber pad design, effectively anti slip and prevent your camera from scratches. And it can rotates smoothly and locks to keep your camera safe.4. Replacement Parts: It is very suitable for carrying spare when taking pictures outdoors. For immediate replacement of accessories when needed.5. Lightweight and Portable: This quick release neck strap mounting fixing screw is lightweight and has a compact size, which is portable and easy to cary.Specification:Item Type: Quick Release Plate Mounting ScrewMaterial: Zinc alloyGross Weight: 66g / 2.3ozSize: UNC 1/4-20Head Diameter: 20mm / 0.8in.Package List:5 x D Ring Camera Screws