The T7S Alu-Mag Slim Waist Series Ball Head from Fotopro is an Arca-type head with a load capacity of 77.2 lb, and it weighs 1.2 lb. The 4.1" tall head has a screw locking knob for the clamp and three bubble levels to ensure your camera is leveled at each axis. The main locking knob locks and relocks, which controls the movement of the ball. At the same time, it enables you to place the camera at a 90° vertical tilt, and the independent pan lock allows you to rotate the camera a total of 360°. The head includes a quick release plate with a 1/4"-20 threaded camera mount.