TipTop EZ Level(Pivot) Rifle Bipod 9" - 13":Swivel Stud Mount, Extendable, Folding, with Sling-attached Hole PN#S5-54664 Heavy Duty, Stable, Quick Setup, Light Weight, Sling-attached design Easy Level (Pivot) adjustment for uneven terrain. Rotate along the axial of rifle barrel up to 27 degrees All-weather no-rust black anodized finish Easiest and fastest stud mount design (Newly Patented) Durable design to manage recoil of the rifle