TipTop EZ Rifle Bipod 9" - 13": Sling Stud Mount, Extendable, Folding, with Sling-attached Hole PN#S3-34660 Heavy Duty, Stable, Quick Setup, Light Weight, Sling-attached Hole Included, Quick snap TipTop design for Easiest and Fastest sling stud mount (Newly Award Patent), Unique function to endure the dynamic force in action. All-weather no-rust black anodized finish, Engraved "Tiptop" trademark in the product to show our commitments to you. Looking for rifle bipods? TipTop is your answer!