Dolica Upgraded Professional Dual Knob Ball Head, 17 lbs Load Capacity Dolica Upgraded Professional Dual Knob Ball Head - Quick Release Plate - Dolica 5 Year Warranty Independent Dual Lock Knob Design for Tilt and Pan 360 degree panoramic horizontal angle and 90 degree vertical angle position capability Quick Release plate has convenient flip locking screw Integrated Pan Degree Markings