Giottos MH656 Quick Release Plate (Black) Quick Release Adapter with MH646 Plate Two spirit levels for precise positioning Sliding plate with safety lock Base with 3/8-Inch socket with 1/4-Inch bushing Two spirit levels for precise positioning Sliding plate with safety lock 1/4-Inch camera mount screw Base with 3/8-Inch socket with 1/4-Inch bushing Length: 2-Inch