LONSEL 360° Rotation Picatinny Rail QD Sling Swivel Mounts for Most Two Point and Traditional Sling. 。◕‿◕。 Premium material, made of high-strength steel and aluminum with matte black finish, safe & durable. 。◕‿◕。 1.37'' push button QD sling swivels, quick release when you press the push button. 。◕‿◕。 360° rotatable swivel mount design, allows for freedom of movement and quick transitions between carry methods. 。◕‿◕。 Easy to install or remove, tighten the steel bolt by allen wrench tool to lock the mount to the picatinny rails. Package List ✍ [1 PACK]: 1 x Picatinny Sling Swivel Mount + 1 x Allen Wrench (Optional) ✍ [2 PACK]: 2 x Picatinny Sling Swivel Mounts + 2 x Allen Wrench (Optional)