Neewer Tripod Leveling Base with Offset Bubble Level for Canon,Nikon,and Other DSLR Cameras with 1/4" Thread, Tripods & Monopods with 3/8" Thread Pro Version of Neewer? Product Adjustment range from: -10 - +10 Tripod Mount Thread Size: 3/8" female thread (bottom), 1/4" thread (attachment) Camera Thread Size: 1/4" thread Lever Head only, camera and tripod not inculded