Features: Quick release screw is selected from metal, the solid design provides a positive connection point. Adapter for Camera Strap It perfects the quick and easy attachment and release. Neck Strap Adapter This hook is strong, rotates smoothly, and has a to ensuring the safety of the camera. Small size, lightweight, sturdy and not easy to break. Shoulder Strap Adapter Also suitable for camera, flashlight, phone, game controller, recorder Specifications: Component: alloy Size:Approx. 8x10cm/3.93x3.14inch Package Includes: 2 Optional Package: Package 1 Include:1Pc Camera Shoulder Strap Hook Package 2 Include:2Pcs Camera Shoulder Strap Hook Package 3 Include:4Pcs Camera Shoulder Strap Hook Package 4 Include:10Pcs Camera Shoulder Strap Hook note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.