Low Gravity Ball Head - Strong CNC aluminium alloy tripod head adopts 40mm diameter ball. Low gravity design reduce the distance between center of gravity and the base, which provide better stability and higher load capacity to support DSLR cameras, mirrorless cameras, camcorders, and other equipment weighing up to 55lb /25kg Damping Knob for Ball - Memory adjustment button help to control friction of the ball according to the load weight. With proper damping, it’s convenient for precise composition and adjust the heavy equipment easily. Vertical Notch - U-shaped notch design of the low profile ball head can easily switch from horizontal shooting to vertical shooting, which greatly improves the efficiency and is also very suitable for multi-angle shooting. 360° Panning Base - Tripod head provide smooth operation for 360° Panning. With engraved index marks, it help you to know where you are each time when you want to do a manual panorama with your camera. Wide Compatibility - This low profile ball head has a quick release plate with a 1/4 inch screw and a 3/8 inch female thread at the bottom, it fits most DSLR cameras, camcorders, heavy duty binoculars, camera sliders, etc.