MH655C Giottos QR Adapter w/MH645 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: 1-5/8-Inch