Finely made for greater positioning with smooth, certain action. Three built-in spirit levels for horizontal and vertical control. The head has a Quick Release camera plate with secondary safety catch for added security. Camera Attachment: 1/4-in. and 3/8-in. screw. Optional Plates: 030-38, 030ARCH-14, 030ARCH-38, 030HAS, 030L, 030UNIV, 030VHS-38, 130-14, 130-38.