WIDE RANGE OF USE: For indoor and outdoor use, applicable to concrete ceilings and wooden beams, the best anchoring solution for all suspension straps and resistance trainers, Hammock Swing kit, Olympic rings, battle ropes, yoga swings and boxing equipment. EASY TO INSTALL: We have pre-drilled two holes for drilling bolts on wooden beams or concrete ceiling, only one step (install the screw) to complete the installation. INNOVATIVE DESIGN: Designed with a strong and durable hook, the hook can rotate 360° and swing back and forth 180°. And to ensure safety, we assembled a SUS304 stainless steel O-ring to prevent the tree from slipping, In addition, the hook loop is strong enough to ensure safety in use. WHAT YOU GET: 2 x Swing Hangers, friendly and helpful customer service.