ITEM NAME:2x 1/4 "Stainless Steel Screw Screw Adapter For Camera Tripod Suppport Hot 2x 1/4 "Stainless Steel Screw Screw Adapter For Camera Tripod Suppport Hot a.imagelink a:hover.imagelink {color:#014584;.Length: shaft is 10.5mm, total length include base is 14.5mm. Material: Stainless Steel. D-ring with flat head screwdriver slot, can drive it by coin.