Heavy Duty Sturdy MaterialOur ladder stabilizer roof ladder hooks Weighing 12 pounds, 30% heavier than other products on the market that weigh less than 9 pounds,Ladder Stabilizer for roof Made of heavy-duty steel with water and rust-proof finish, this ladder accessories for roof features extreme strength and superior durability ensuring safety while climbing on the roof. They can hold a load capacity of 500 pounds and service long-term life. Unique Design 1.The ladder hooks for roof design four mounting holes you can select the appropriate mounting holes ,according to the ladders with different spacing steps, in order to achieve the desired effect, Attaches to any style extension ladder. 2. Roof ladder hook with Rubber Grip T-Bar for Damage Prevention. Fits for most little giant ladder and most others.