[Safe and easy to install] Ceiling hooks made of high-quality metal maximum rust and corrosion protection, safely supports up to 450 kg with a high-quality welding process, suitable for indoor and outdoor installation. We have pre-drilled two holes for screwing to wood or concrete, can be installed in minutes. [360 rotatable] with a strong heavy-duty hook, the hook can be rotated 360 degrees and swung back and forth 180 degrees. Makes the hook more flexible, less shaking. For safety, we have installed a metal O-ring to prevent the shaft from slipping out. The buckle on the hook is also strong enough for safety. [Pure relaxation] The hanging chair swing spring set allows you to swing, rock and turn gently and comfortably and see your suspension through the damping of shocks. With the steel spring, you can redesign your hanging chair and the most sophisticated seating option. [USER-FRIENDLY] The ceiling hook hanging chair set with two pre-drilled holes for screwing to wood, wood, ceiling beams or concrete. the mounting holes with a pen and then drill with a drill. You should tighten the expansion screw or wood screw and hammer it in. [Versatile use] Professional ceiling mounting and spring Perfect for hanging chair, hanging lamp, swing, love swing, hammock, punching bag, sling, yoga towel, awning, sling, hanging chair, hanging, hanging. Colour: black Material: metal Package contents: 1 x Ceiling hook 1 x Carabiner hook 2 x Expansion screw 2 x Screw Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.