FLM CB-38FT 38mm Ballhead with Friction Control and Tilt Function, 55.11 lbs Load Capacity FLM CB-38FT 38mm Ballhead with Friction Control and Tilt Function - 1/4-20" to 3/8" Conversion Screw - FLM 10 Year Warranty 38mm ball diameter Friction control Patented Tilt Function Calibrated panning base