1. Quick Release Camera Fixing Screw standard 1/4"-20 D-Ring screw with Coin Slot
2. 1/4" metal male thread with flat head screwdriver slot & hinged "D" Ring.
3. Can be used on any quick-release QR plates,tripods, monopods, telescopes, ball heads, lens collars
4. The main body was made of Stainless steel, and the Rotatable D-ring made of ZINC Alloys.
5. Package includes 5pcs 1/4"-20 D-Ring screw