6-9 Inch Adjustable Height Swivel Model Benchrest Solid Shooting Bipod Tactical Hunting Sniper Rifle Bi-pod Designed for real fire caliber, no collapse Mounts onto rifles with sling stud or with picatinny rail via adapter (sold seperately, search B012ZQSWYC, Add Both To Cart, it'll save 8%) High quality aluminum alloy in durable black matte finish, Rubber feet avoid slip, top rubber covered avoid scratch your caliber Easy to use, sturdy construction with lock screw, frame crossbar Swivel style from side to side by Pivot Leg