Feature Full Metal, 6-9 Inch, With Picatinny Rail Adaper Sling Connection 6 Levels Specification Height (from top to bottom as picture shown): 155mm (6.0 inch) to 230mm (9.0 inch), 6 levels (0.5 inch per level) Weight (net): 285g / 10.0oz Easy to use, sturdy construction with lock screw, frame crossbar anc claw etc Mounts onto rifles with sling stud or with picatinny rail via adaper Push the button to eject the feet Rubber feet avoid slip, top rubber covered avoid scrach your caliber High quality aluminum alloy in durable black matte finish Designed for real fire caliber, no collapse This bi mount pod is not swivel style from side to side Size