***** **********Best Quality Guranteed. *****1/4"-20 D-Ring screw with Coin Slot*****Can be used on any quick-release QR plates, tripods, monopods, telescopes, ball heads, lens
collars*****Total length: 0.51";
Threaded shaft: 0.2";
Empty shaft length: 0.2"; Base 0.11" *****All Metal*****2 Pack