TipTop&reg; EZ Hunting Rifle Bipod 6" - 9": Sling Stud Mount, Extendable, Folding, with Sling-attached Hole PN#S3-34659 Stable, Durable Construction with lightweight aircraft grade alloy and metal materials Quick snap TipTop design for Easiest and Fastest sling stud mount (US 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 high quality commitments to you. Folding up for easy carry. Sling hole to maintain sling attachment. Weight: 12 ozs.