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. Rubber Grip T-Bar for Damage Prevention Compatible with round or D rung styles,Two hooks must be used per ladder. 

Our ladder hooks 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. 

 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. 

Roof Ladder Both Hooks Fit Over The Top 2 Rungs Of The Ladder & Hook Over The Roof Edge.lock jaw ladder grip 

The ladder hooks is heavy duty,the ladder hook fits single or extension ladders in wood, fiberglass, or aluminum in both round and D rung styles. Two hooks must be used per ladder.