• Non-Slip Surface
• Built-In Bubble Level
• 6507 Quick Release Plate
• Aluminum-Alloy Construction
• 1/4"-20 Folding-Wing Thumb Screw Mount
• Arca-Type Compatible Clamp with Cam Lock
• Compatible with tripods or support systems that feature a 3/8"-16 mount
• Reducer bushing included for compatibility with tripods or support systems that feature a 1/4"-20 mount
• Uses ball-and-socket joint to help maximize pan-and-tilt flexibility
• The ball-and-socket joint provides 360° of swivel control, is tiltable down to a 90° angle, and can be locked into place
• Large, primary locking knob allows ball-and-socket joint to be quickly swiveled, angled, fully tilted, or returned to its upright position
• Knurled friction knob on the opposite side of the primary locking knob applies variable tension on the ball-and-socket joint's movements
• Secondary locking knob with knurled surface allows the head to rotate 360°

The SLIK PBH-535AS Ball Head with 6507 Quick Release Plate is an Arca-type ball head that has a load capacity of 11 lb and can be attached to tripods or other support systems that feature a 3/8"-16 mount. A reducer bushing is provided, which allows this ball head to be attached to tripods or other support systems that feature a 1/4"-20 mount. Cameras or accessories that are compatible with a 1/4"-20 mount can be connected to the included 6507 Quick Release Plate. The quick-release plate can be attached or removed from the Arca-Type clamp located at the top of the head's ball-and-socket joint by pulling the clamp's integrated cam lock lever, which also allows the plate to be reattached. The quick-release plate features a rubberized, non-slip platform while a built-in bubble level along the edge of the clamp accommodates landscape orientations. By loosening the ball head's primary locking knob, the head's ball-and-socket joint can be quickly swiveled, angled, fully tilted, or returned to its upright position. Variable tension can be applied to the ball-and-socket joint's movements by rotating the friction knob located on the opposite side of the primary locking knob. Between the primary locking knob and friction knob is a secondary locking knob, which controls the ability to rotate the head 360°.