Precision CNC is processed from high-quality aircraft-grade aluminum, with a smooth surface and scratch resistance, making you feel good when taking photos.Completely Arca-swiss RRS Berno KIRK compatible. Black anodized treatment for high durability. Connection screws made of stainless steel.Quick release, turn and remount to your camera for either a horizontal or vertical shot.Mounting Screw Diameter: 1/4inch. Reserved extra 1/4inch -20Threaded mounting holes for additional functions.Colour: BlackMaterial: aluminum alloySize: 148 x 70 x 88MmPackage Contents:2 x Quick Release L PlateOnly 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.