[Safe and easy to install] Ceiling hooks made of high-quality metal with maximum rust and corrosion protection. Safely supports up to 450 kg with a high-quality welding process, suitable for indoor and outdoor installation. Two pre-drilled holes allow for quick and secure mounting to wood or concrete. Installation can be completed in minutes. [360 rotatable] Features a strong heavy-duty hook that rotates 360 degrees and swivels 180 degrees back and forth, providing greater flexibility and reduced shaking. Includes a metal O-ring to prevent the shaft from slipping out. The hook latch is sturdy for added safety. [Pure relaxation] The hanging chair swing spring set allows gentle swinging, rocking, and rotating motion with cushioned support. The steel spring enhances comfort and enables easy upgrading of your hanging chair for a premium seating experience. [User-friendly installation] The ceiling hook set includes two pre-drilled holes for mounting to wood, rafters, or concrete. Mark the mounting holes with a pen and drill the required holes. Insert and securely tighten the included expansion screws or wood screws. [Versatile use] Professional ceiling mount and spring set ideal for hanging chairs, hammocks, swings, pendant lights, punching bags, sling trainers, yoga towels, awnings, and other suspended fixtures. Color: Black Material: Metal Package Contents: 1 x Ceiling hook 1 x Carabiner 2 x Expansion screws 2 x Screws Note: Light and display differences may cause slight variations in color. Measurement may vary by +/- 1-3 cm.