Corrosion Resistance, High Hardness304 stainless steel rings made of high quality raw materials. No rust, corrosion resistance, high hardness, non-toxic and pollution-free environment.Safe & SturdyHeavy duty commercial grade swing hangers are designed for use by children and adults, and rated for residential use at a rating of 450kg(1 Pieces), they are safe.Easy to InstallWe have pre-drilled two holes for bolting to wooden or concrete beams. Including 2 concrete anchors and 2 hex bolts. Pre-drilled expansion screws for concrete application installed in just minutes.Indoor and outdoor useFor indoor and outdoor use, applicable to concrete ceilings and wooden beams and can be used more widely. Best used as a wall hook for sling trainer, suspension trainer, swinging chairs, hitting bags, or hanging anything heavy on a hanging rack.Package Included2 x durable stainless steel round eyelets with ring, 8 x anchor screws, 2 x stainless steel snap hooks.