Feature:1. FINE WORKMANSHIP: The main body of the photography clamps is made of premium aluminum alloy, sturdy and lasting, CNC one piece molding processing technology, which can ensure long term stable use.2. EXPANDED EQUIPMENT: Expand your shooting equipment, the bottom of the clamp comes with 1/4 inch threads and positioning holes, comes with 40MM for Arca quick release plate, you can freely choose the type of equipment to expand.3. WIDELY APPLICABLE: The universal clamp can be used on 1945MM bracket tubes, such as cycling handles, car handrails, tripod poles, light stands, rails, etc., providing a temporary but safe and stable accessory mount.4. STRONG GRIP: The photography tube clamp has rubber lined pads for easy gripping and to protect the equipment, the jaws are made of aluminum alloy for a firm grip on the tube.5. EASY TO OPERATE: The locking knob of the clamp is very large and easy to operate, giving you enough grip when you need to tighten or loosen the clamp.Specification:Item Type: Photography ClampsMaterial: Aluminum Alloy, RubberQuick Release Plate Size: Approx. 40mm/1.57inClamping Distance: Approx. 19-45mm/0.75-1.77in.Package List:1 x Clamp1 x Quick Release Plate1 x 3/8 Screw1 x 1/4 ScrewNote:Manual measurement please allow 12mm/0.040.08in error.