【360° ROTATIONAL DESIGN】360° hook fastening. Free rotation with pull loop that can be easily opened. Innovative and patented design. 【HIGH QUALITY, PROTECTION AGAINST CORROSION】304 stainless steel rings made from high quality raw materials. No rust, corrosion resistance, high hardness. 【ONE & ROBUST】Heavy-duty commercial-grade swing hooks are designed for use by children and adults and are rated for home use. They are safe to support a load of 500 kg. 【EASY TO INSTALL】We have pre-drilled two holes for attachment to wooden beams or concrete. Includes 2 concrete anchors and 2 hex screws. Pre-drilled expansion screws for concrete applications are installed in minutes. 【MULTIFUNCTION】Best use as wall hook for suspension trainer, sling trainer, punching bag, gym, yoga, swing indoor or outdoor. 【360° ROTATIONAL DESIGN】360° hook fastening. Free rotation with pull loop that can be easily opened. Innovative and patented design. 【HIGH QUALITY, PROTECTION AGAINST CORROSION】304 stainless steel