Twod Hunting Rifle Bipod - 9 Inch to 13 Inch Adjustable Super Duty Tactical Rifle Bipod + Rail Mount Adapter Quickly attach to or detach from the rifle using existing swivel stud. Foldable arms with spring tension control. Come with the mount adapter. Adjustable leg length: 5 settings for different length, the bipod is ready to meet your needs. Made of hardened steel and aluminum, non-rust black anodized finish, the rifle bipod is duty and light weight. Legs can extend from 9 inch to 13 inch and adjustable leg length (5 settings) with return springs.