[HIGH QUALITY, CORROSION PROTECTION]304 stainless steel rings made of high quality raw materials. No rust, corrosion resistance, high hardness.[SAFE & STURDY]The heavy duty commercial grade swing hooks are designed for use by children and adults, and ?us for residential use at a rating of 500kg, they are secure.[EASY to INSTALL]We have pre-drilled two holes for bolting to wooden beams or concrete. Including 2 concrete anchors and 2 hex bolts. Pre-drilled expansion screws for concrete application installed in just a few minutes.[MULTIFUNCTION]Optimal use as wall hook for sling trainer, suspension trainer, punching bag, gym, yoga , swing indoors or outdoors.[PACKAGE CONTENTS]1 x durable round stainless steel saddles with ring, 4 x anchor screws, 1 x stainless steel spring carabiners. Features: - Material: 304 stainless steel - Color: silver - Load capacity: 450kg Package contents: 1 x durable round stainless steel saddles with ring< /p> 4 x anchor screws 1 x stainless steel spring carabiners.