A quick release system is a great tool for your tripod. This Manfrotto Rapid Connect adapter gives any tripod quick release capabilities. Utilizing a traditional hexagonal plate, this holds your camera safely and securely. Two built in spirit levels help give accurate set ups. Attachment: 1/4-Inch screw; attachment (bottom): 3/8-Inch female thread; attachment 2: 1/4-Inch female thread; 2 bubble spirit levels; color: black; material: aluminum; plate type: 030-14; secondary safety system; weight: 0.79 lbs.