Koolertron Pro DSLR Camera Track Dolly Slider Video Stabilizer with 1/4" and 3/8" Thread Screw for all Types of Cameras DV ,Supports up to 22lbs/10kg Weight,29.5 inch/75CM Length Get double the amount of camera travel compared to other sliders that have the same body size 750mm Travel On Tripod, 370mm Travel On Ground; Load capacity up to 10kg Compact size, make you can get amazing slider shots wherever you are whenever you want! Can operate on ground too! It has adjustable feet to help you level it on non-perfect surfaces. But remember that you will get a normal slider's camera travel range when you use it like that. 1/4" male thread screw for all kinds of professional camcorders, SLR cameras, DSLR and DVs, including a 1/4" to 3/8" Adapter, so can be installed ballhead for different angle recording