ITEM NAME:2PCS 1/4 "Stainless Steel Screw Screw Adapter For Camera Tripod Suppport j5l 2PCS 1/4 "Stainless Steel Screw Screw Adapter For Camera Tripod Suppport j5l a.imagelink a:hover.imagelink {color:#000000;.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.