Features: brand new and high quality.Built-in 2 spirit bubble level, which the photography precisely in horizontal orientation.38mm Arca- standard U-shaped grooves of the clamp, which can protect your camera from accident .of aircraft-grade aluminium material, processing, hard-anodized surface.Self-euipped with a knob, of all metal, more durable and non-ageing.Standard 1 or 4inch and 3 or 8inch thread screw hole, for any arca style plate, camera bars and multi- rails. such for Arca-, , Markins, , Kangrinpoche, etc.Specifications: Card Slot: 38 mm or 1.49 inchSpirit Bubble Level: 2size: long 70mmMaterial: Aluminum alloycolour: blackPackage Contents: 1 x quick release splint clampOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.