Features: Item Name: Quick Release Detachable QD Swivel and Mount Adapter Made of high-strength steel, rust-proof, durable, and built to last Stud diameter: 10mm; total length: 28mm Securely mounts to various handguards and provides a reliable attachment point for your sling Compatible with Keymod or mount systems; allows fast and easy installation Simple operation: press button to insert, release button to remove pin Specifications: Color: Black Material: Steel Size: Approx. 28 x 10mm (1.1 x 0.39in) Weight: Approx. 20g Package Includes: 1 Piece QD Adapter Sling Stud Note: - Please allow 0-1cm error due to manual measurement. Ensure you are comfortable with this before purchasing. - Due to differences in monitor displays, the actual color may vary slightly from the image. Thank you.