Benro Video Quick Release Clamping Base w/ QR6 Plate (P4) The P4 was designed to enable you to move your camera from a tripod, monopod or other support devices at a faster speed. Can be mounted via the 1/4-20" or 3/8"-16 thread located underneath the clamp. An anti-twist video register pin helps secure your camera against lateral movement. Ideal for location shooting or for studio use. Limited 3-Year Warranty.