Harris S-L Swivel Bipod with Stud Mount 9" to 13"Bi pod Series "S": Swivels to either side for instant leveling on uneven ground. Hinged base has tension adjustment and buffer springs to eliminate tremor or looseness. They are otherwise similar to non swivel series. Available for ALL models except the "H" model. S L Adjustable legs extend from 6" to 13" with standard legs. (H SL)