Sturdy and Durable: Plant hooks and nylon cords are strong enough to hold plants or flower baskets up to 10kg (max) weight, no worries about fastness, plants or flower baskets will be safe with adjustable decorative plant hanger brackets. [Working principle]: The working principle of the plant hook pulley is opposite to that of the seat belt. There are about 8 locations. Each location is about 10 cm apart. The rope has to be pulled slowly to get stuck. When you pull the rope fast, you always pull the rope to the end (the rope won't stop at the height you want). Easy to Install and Durable: Self-tapping screw hook, easy to install manually, easy to screw the screw hook into wood, plywood or drywall, the steel points bite quickly without peeling off, providing maximum strength and durability Multi-purpose: Retractable plant hangers are designed to fix bird feeders and hanging plants indoors, can be hung high and pulled down for easy feeding or watering, the ropes and hooks are sturdy, pull plants or birds under the hanger safely. And the height can be adjusted without a ladder, just by pulling the rope. Note: 1. The load-bearing range is from 1.2kg to 10kg, please do not hang the goods less than 1kg or the goods that are too heavy, because the plant hanger is connected with the inner spring and has elasticity. 2. Pull the rope slowly, then you can position the plant to the height you want.