new and high quality Built-in 2 spirit bubble level, which the photography precisely in horizontal orientation. 38mm for Arca- standard U-shaped grooves of the clamp, which can protect your camera from accident drops. Made of aircraft-grade aluminium material, CNC processing, hard-anodized treatment. Self-euipped with a knob, made of all metal, more and non-ageing. Standard 1/4Inch & 3/8Inch thread screw hole, for any arca style plate, camera bars and multi-purpose rails. such as for , for Arca-, for KIRK, for , for Markins, for , for Kangrinpoche, for etc. Card Slot:38 mm/1.49 inch Model:QR-110N Screw Hole:UNC 1/4 & 3/8 Spirit Bubble Level:2 Color:As Shown Material:Metal Package Contents: 1 * Tripod Stabilizer Only 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.