Heavy Duty Organization HooksThe hooks are made of carbon steel with paint treatment. Non-Slip Rubber Blurred orange non-slip rubber, which can firmly fix the load and protect the surface from the load from scratches. Load SupportGypsum board (18 lbs-8 kg), wood (33 lbs-15 kg), stone wall (35 lbs-15.8 kg). 2 Types of Installation Screws With black wide threaded plugs for drywall and white expansion anchors for wood, brick and concrete walls Application Can be used to hang bicycles, ladders, tires and other important objects. Quantity delivered: 4 pieces (with screws) Product color: orange Product specification: 6.1& 39;& 39;*7.1& 39;& 39;*2.4& 39;& 39;cm (manual measurement, there is negligible error)