It must be fixed to the wall using 8 M12×120 mm expansion screws. Make sure the wall is a solid supporting structure. Solid walls should provide strength and stability. The wall should be made of solid bricks, stones, concrete and reinforced concrete. The reinforced concrete and aerated concrete must be layered. The supporting wall must have a strong structure, without any gaps. Its thickness should be at least twice that of the expansion screws, the thickness must be above 22 cm (220 mm) and should be able to support more than 1.5 tons of weight. DO NOT MOUNT the product on steel sheets or frames, nor walls consisting of hollow or perforated bricks, scab and other non-load-bearing structures. Before use, please check and confirm that all connecting screws are tightened properly. The bracket parts and the bracket must not show any cracks. DO NOT OVERLOAD. Overloading is strictly prohibited. DO NOT LIFT PEOPLE OR ANIMALS. It is strictly forbidden to lift people with this pulley. Do not stand under the pulley to avoid any accidents! Inexperienced persons or persons unfamiliar with the safety instructions must not be allowed to operate the product to avoid accidents. IMPORTANT: Only electric hoists are permitted.