Continental Liberty QD sling swivels are heavy duty, duty grade. Thoughtfully engineered and built with longevity as the main design principle. In use daily with active duty, law enforcement and patriots around the world. Quick push button, quick detach for simple and easy one handed operation. Compatible with US QD sling attachment points. Built for maximum performance and longevity. Proudly made in the U.S.A. Continental Liberty is a grassroots US defense company built for the people. www.continentalliberty.com Continental Liberty's QD sling swivels – Honoring our German ancestry, our qd swivels embody a commitment to long term durability, maximum performance, form following performance, old-world techniques and longevity. Continental Liberty QD swivels are made from quality carbon steel, as we are focused on time-honored materials, old world techniques, and maximum performance that define longevity. Swivel can hold 250 pounds in a pull test rating. The quality matte black phosphate finish adds another layer of strength for maximum durability. Chromed Ball Bearing Staking: Ball bearings are staked in place with the parallel staking method for enhanced durability under stress, providing maximum longevity under hard use.