Features: Quickly Release Button Rotating Metal Clasps with Heavy type Black Phosphated Steel Construction Support. Includes Installation Base set with 4 Screws, 1 Nut, and 1pc Wrenches for Secure. Ideal for Campers, and Outdoor lover pursues Reliability Fastening Solution for Gears and Equipment. Safely Attach Equipment to Backpacks, Tents During Camping Trip, Hiking Expeditions. Durability Rotating Rings with Corrosion Resistant Finish Ensures Long terms Performances in Harsh Weather Conditions. Specifications: Dimension:39mm/1.54in 46×30mm/1.18×1.81in 25mm/0.98in 20mm/0.79in 16mm/0.63in 15.5×11.8mm/0.61×0.46in Component:Metal Package Includes: 1Set Quickly Release Button Lock note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.