Quantity: 1 pair = 2Weight: 136 kg (300 LBS) / pairFeatures: Built-in metal pulleyAccessories: 2.4 meters black polypropylene rope (black and red rope)Common usage:1. The hook of the pulley is fixed in a firm place (such as the ceiling);2. Use the end of the rope with the hook to hang the objects.3. Adjust the height of hanging objects by pulling the end of the rope without the hooka) To raise (adjust upward) the height of the item: simply pull the rope downwardb) Lower (adjust downward) the height of the item: you need to first push the stop bar in the pulley upward, lower the item to a certain height, and then pull the rope downward until it is adjusted to a suitable positionFeatures:The rope can be tightened and locked as neededVery easy to adjust the height of hanging lamps (objects)Keep lamps and plants in a suitable position, which is more conducive to plant growthAdapts to all shades of plant lightingAs long as it is a product that needs to be repaired, it can be used.,"