This is the UTG PRO TBNR Bipod. 3 Position Folding with Steel-on-steel Lockup. Low Profile Picatinny Mount Features Tension-adjustable 360 degree Panning & 19 degree Forward, Rearward, Left, and Right Tilt. 8.5″-11″ Center Height Adjustable. Automatic Leg Retraction. Patented Height Adjustable Spiral Guided Leg Extensions with Steel Ball Bearing Detent Ring Locks Manages Height Adjustment….