Pergear Mini 360 Degree Rotation Tripod Monopod Ball Head w/ Quick Release Plate for Canon Nikon Sony Pentax Fuji DSLR Video Cameras Pergear TH3 mini Ballhead has a indexed rachet locking knob for 360 pan and a double groove for +90~ 90 tilt movements. Secondary security lock wont let the quick release plate or camera be released except the lock stops the quick release lever from openning fully A single locking mechanism block for free movements on all axes for greater speed of use. 3/8" screw thread base for tripod and 1/4" screw thread applied to most cameras.