Quality Shooting Bipod : Constructed of aluminum alloy and carbon fiber, Solid and stable, Heavy-duty but Light weight. With the lever lock, the height of the shooting sticks also can be adjusted in seconds. DIMENSIONS : 15.8 - 26.8" of height adjustment and weighs 1.1 lbs (0.5kg) . EASE OF USE : This bipod mounts directly to any 1913 style Picatinny rail via the included Quick Detach lever. Preload on Pan and Cant can be tightened by means of the knurled knob. Built-in Spike & Foot Covers : Allow you to rapidly change from the rubber foot and spike cover to the aluminium spikes by just removing the cover itself, Rubber bipod foot while shooting.