CowboyStudio Panoramic Gimbal Tripod Head BK-45 Specialized 1/4-Inch Screw For Telephoto Len Camera L x W x H: 210 x 70 x 210mm, Base diameter: 45mm 3/8-Inch screw on base for tripod, 1/4-Inch screw thread on QR plate for camera Max Load: 22 lb