Fits D Series or V Series dovetail bars. Convert your SkyWatcher AZ-GTi to accept D Series or V Series dovetail bars. Incorporates a split clamp design that grips the dovetail bar along the entire surface of the saddle and will not dent or scratch the dovetail bar. The dovetail clamp has a large locking knob for tool free operation, spring loaded jaws, anodized aluminum and stainless steel construction. 2.5" Long, 4" Wide, .75" Thick, Wt. 8 oz.