Features 1、Rubber Grip T Bar: The rubber grip T bar prevents damage to roofs, making it suitable for asphalt shingle roofs, ensuring safety during use. 2、Versatile Application: This ladder hook is compatible with most ladder styles, suitable for round and D shaped wooden, fiberglass, or aluminum ladders. 3、Easy Installation: Installation is a breeze with our ladder roof hook instructions. Ensure to tighten the wing nuts on both hooks to secure the ladder firmly in place. 4、Dual Hook Design: The ladder roof hooks fit over the top two rungs and secure to the roof edging, providing balanced support. Each ladder requires two hooks for excellent stability. 5、Heavy Duty Construction: Crafted from heavy duty steel with a water proof and rustproof coating, this rooftop ladder stabilizer offers exceptional strength and durability, supporting up to 500 pounds. Specification Item Type: Roof Ladder Hook Material: Steel Application: The ladder hook is extremely robust and suitable for most ladders. Suitable for round and D shaped ladder styles of wooden, fiberglass, or aluminum single or extension ladders. Compatible with most ladder accessories and most ladder accessories. Package List 2 x Wheels 2 x Ladder Hooks 4 x Connecting Plates 2 x Handle T Bar 4 x Rubber Handle Covers 23 x Screws 24 x Nuts