No more fussing with nails! Comes with pre-inserted fasteners so you can tap into a wall without having to hold the nail! Ideal for plaster/drywall surfaces. Reinforced elbow of the hook has added support. Weight ratings are based on hangers nailed into studs and are not cumulative so two hangers will not hold double the weight. For best results, choose a recommended weight rating that greatly exceeds the object to be hung. Hooks come packaged in a reusable storage tin, great for toolboxes or kitchen drawers!