ITEM NAME:Longer Shaft D-ring Screw 3/8 inch-16 Thread Camera Tripod Quick Release FixT7X2 Longer Shaft D-ring Screw 3/8 inch-16 Thread Camera Tripod Quick Release FixT7X2 it is light weight and durable. D-ring with flat head screwdriver slot, can drive it by coin. You don't need to worry there is no spanner. The screw could be used with tripods, monopods, telescopes, ball heads, lens collars, lens plates etc. colour:Silver Material:metal size:for D-ring Screws:3/8 inch Total length including base: 16.2mm(0.64 inch). Total shaft length: 13mm(0.51 inch). Threaded part of the shaft: 7mm (0.27 inch). No thread part of shaft:6mm(0.24inch). Package Contents: 2* Fixing screw adapter.2 Fixing screw adapter. D-ring with flat head screwdriver slot, can drive it by coin.