Desmond brand DPL-169 : Arca-Swiss compatible QR plate. Dual dovetail design. 169mm (6.65") long. 2 x 1/4"-20 screws (screws have both flat head screwdriver slot & 4mm hex socket). All metal (aluminum). Includes 2 x 2.5mm hex safety screws on the underside. Includes 2.5mm and 4mm allen wrenches. Weight: 3.9oz (111g).