1.Adjustable Double Camera Clamp Mount: The clamping width of double mount clamp can be adjusted from 10mm to 50mm by adjusting the T-Shape Knob. One of the super clamps can be firmly fixed to the table / chair / pipe / light stand / heavy duty tripod, etc., while the other side of the camera clamp mount can be used to fix the mini tripod / umbrella / reflective umbrella,etc 2.Double Ball Head & Flexible Angle Adjustment: Due to the 360-degree adjustable two ball head magic arm design, you can ly adjust the angle of the gopro clamp mount for multi-angle shooting. After quickly loosening the T-shape knob in the middle, you can adjust the magic arm to the desired angle and then tighten the T-shape knob 3.1/4'Screw Hole & 3/8' Screw Hole: Double Clamp camera mount is designed with 3/8 screw holes on the side and 1/4 screw holes on the front, back and bottom. Multiple screw holes can be used to attach additional photographic accessories 4.Wide Application: Super Clamp Double Camera Clamp with Ballhead is widely used in various indoor or outdoor photography and video recording occasions. Most of the shooting accessories or tools can be clamped, such as: photography reflector / mini phone tripod / selfie stick / reflective umbrella / umbrella, etc. At the same time,it also can be fixed on the photography light stand / photography boom arm / table / chair / heavy duty tripod / pole, etc 5.More Stable & More : 1)super clamp and margic arm is an integrated embedded design, so it is more stable, not easy to deform, and easy to use. 2)The mount clamp bracket magic arm double ball head is made of high quality aluminum alloy, anodized treatment with a glossy surface, sturdy and corrosion-resistant. Max Load Capacity: 2 kg/4.4 LB 3)Both crab plie clils are designed with non-slip rubber pads in the jaws to reduce scratches and keep balance