All swing hammock bolts made of SUS304 food grade stainless steel of permanent rust, industrial built high qualityPerfect for hammock chairs swing, porch swings, swinging chairs, punching bags, or hanging any other heavy object of an overhead mount. EASY TO INSTALLThe swing hanger bracket innovative 2 IN 1 design can be mounted directly onto wooden beams, cedar wood and other wooden structures. Hexagon screw head design, can be installed directly with a wrench or electric drill, and the installation is more convenient. SAFE AND SECUREThe hammock ceiling mount innovative 2 IN 1 design support for 180 back and forth swing. And to ensure the safety, we have assembled an ring with material SUS304 stainless steel to avoid the shaft slide out, Heavy duty commercial quality swing hooks are rated for use by children and adults, 2 hangers Total Weight Limit - 3,600 lbs CORROSION RESISTANCE,HIGH HARDNESShammock hanger 304 stainless steel rings made of high quality raw materials. No rust,corrosion resistance, high hardness, non-toxic and pollution-free environment. Hammock bracket suitable for any scene.