Net weight: single hook weighs approx. 6g, single expansion tube weighs approx. 0.3g, set of 12 hooks + 12 expansion tubes net weight approx. 75g Gross weight: 76+10g Product size: hook size about 53*26mm, screw diameter about 0.5cm Size of the expansion nail is about 28*6mm Package size: 11*8*2cm Product colour: Black Product material:metal . 1. Can be used for indoor, outdoor string lights, wind chimes, Christmas decorative lights, curtains, flower pots, etc. 2. Designed with safety buckle to prevent hanging items from falling and improve the safety performance of outdoor hooks 3. Outdoor light hooks are made of high quality stainless steel and coated with anti-rust coating, stable, durable, dustproof and not easy to break 4. You can use a spanner or hammer to screw the hook into the wood, to install the hook on the wall, you need to make a hole in the wall, put a plastic tube, then put the hook into the plastic tube Package: 1*hook set (with 12 vertical hooks + 12