Harris Bipod Swivel - Harris Bipods clamp to any quick detachable sling swivel stud. The swivel series has the ability to level your firearm on uneven ground. They have strong recoil springs to prevent damage to the stock and maintain point of impact. Harris Bipods Legs are adjustable for height. The height increments are 1 inch.Manufactured with heat treated steel and hard alloys with a black anodized finish. Quick Detachable ClampDetachable Sling Swivel Stud100% Made in the USASwivels to Level Uneven GroundSpring Action