Roof Ladder Hooks for Ladders

Purchased on Amazon for antenna work on my home roof.
Used only once and returned to the box.
I'm selling it because I probably won't use it again.
Below is the Amazon product title:
Ladder Attachment Relief Roof Ladder Hook with Wheels Rubber Grip T-Bar Steel Roof Hook, Ladder Stabilizer 2pcs Heavy Duty, Quick and Easy Setup for Accessing Steep Roofs

?【High-Quality Material】Made of heavy-duty steel, the roof ladder hook is sturdy, rust-proof, wear-resistant, and durable for long-term use.
?【High Durability】The roof ladder stabilizer has a load capacity of 500 pounds and is robust. At the same time, the universal wheel design allows for easy connection of the ladder to the roof, saving energy and time.
?【Ideal Way to Secure Ladder to Roof】The roof ladder is a practical tool. It provides an ideal way to secure the top of the ladder to the roof, allowing for quick and easy access to steep roofs.
?【Comfortable and Convenient】The roof ladder hook can keep the top of the ladder away from the wall, providing more elbow room, making it more comfortable and convenient when working at the top of the ladder.
?【4 Mounting Holes】Designed with four mounting holes, you can choose the appropriate mounting hole according to the different spacing of your ladder to achieve the desired effect. The ladder roof hook can also be attached to extension ladders.