Build-in 3 bubble levels, it is easy to find correct angles both in horizontal or vertical U-shaped grooved clamp and fast loading base with anti-skid lock function, which can protect your camera from accidential falling or drops. for any Arca plate, such as Arca-Swiss, Wimberley, Sunwayfoto, aluminum alloy, anodized corrosion-resistant and wear resistant. 50mm Quick release plate QR clamp 3/8-inch with 1/4-inch adapter.