The Tornado 30 lbs. steel ladder hook supports up to 30 lbs. The hook projects 7-3/8 inch and is constructed of durable steel. Use it in drywall or wall studs (wall studs preferred). Weight limit is 15 lbs. in drywall and 30 lbs. in wall studs. The included anchors use self-drill technology in drywall. For studs, pre-drill a pilot hole first for the anchors. Use 2 hooks for extension ladders. Using extra hooks does not multiply weight limit.