The G1373/38B Gitzo Quick Release Plate is an additional accessory plate attachment for the G1376M and G1576M Off Center Ball Heads: - TYPE: B - ATTACHMENT: 3/8-Inch - SIZE STYLE: short - SIZE: 54x56 2.13x2.2-Inch TECHNICAL SPECIFICATIONS: Type B attachment; attachment: 3/8" screw; color: gray; length: 2.20 in; material: aluminum; weight: 0.17 lbs; width: 2.13 in.