Heavy-duty Racor/Tornado hooks by E-Z Ancor . Features include: Extended-length plate design distributes weight better for superior holding power. Solid metal construction, with no weld points, adds strength and reliability. Unique cutting wings on tip self-drill into drywall or wood. Patented bi-level thread diameter holds tight in drywall or wood. Smooth fastener head provides finished look. U-hook is made of rubber-coated zinc alloy. Load capacity: Up to 20 lb. in drywall, up to 50 lb. in wood stud, and up to 35 lb. if both. These hooks feature a permanently attached fastener and therefore do not include a tang or leveling lines. Includes 2 hooks and 4 screws per card.