Materials The practical storage hooks are made of durable iron, the gypsum board can withstand 15 kg, the wood 30 kg, the stone wall 40 kg, and the hooks are coated with non-slip PVC, this who can protect our ladderStriped Hooks. Double Hook Designfor hanging air hoses, garden and lawn tools and some outdoor equipment. Hang the floor of your garage, garden or house. Unlimited possibilities for efficient storage ingarages, shops, warehouses or sheds. Perfect for Heavy ObjectsExtended length plate design distributes weight evenly for excellent load capacity. The tip on the black plate allows quick positioning and easier assembly. No sudden ruptureThe aluminum and the non-slip coating provide a secure and firm grip. Package Included 6 wall hooks (4.5"x 1.4"x 2.6") Specifications: Material: iron + non-slip rubber hook Easy to assemble: Comes with drywall screws, steel screws and plastic bolts for easy installation Application: It can be used to hang bicycles, ladders, tires and other important items Loading capacity: gypsum board (33lb-15kg), wood (66lb-30kg), stone wall (88lb -40kg) Package included: 6 x Double J Hooks