Caldwell ACCUMAX Premium 13-30" Swivel Bipod Legs Lock forward 90 degrees or backwards (spring-loaded buttons) - Carbon Fiber Legs with Lightweight non-slip rubber feet - Secure attachment method - Twist-locks for fast adjustments - Secure leg-stops protect overextending - The Accumax Premium Carbon Fiber Bipod attaches for easy and secure lock-up. It features quick-deployment carbon fiber legs with 90 degree forward locking method or backward method with spring-loaded buttons. The Premium Carbon Fiber Bipod also features an omni-directional ball mount for 360 degree panning a lever lock handle for fast adjustments and of course twist-lock leg length adjustments.