The Driftmaster Li'l Pro 3/8" Thread Square Rail Rod Holder Clamp Base can be used on square rails up to 1-1/4" and accepts Li'l Pro Series rod holders. The universal clamp opens to 1-7/8" and has a 3/8" diameter threaded center hole. This clamp base will not accept a lantern holder, and the rod angle is not adjustable. Driftmaster Li'l Pro 3/8" Thread Square Rail Rod Holder Clamp Base Black - Marine Accessories at Academy Sports
