Features: Brand new and high quality High-quality material: The ceiling ladder hook is selected from heavy steel. Strong, rustproof, wear-resistant Heavy-duty: The roof stair stabilizer is very strong. At the same time, the universal wheel make it easy to connect the stair with the ceiling, saving energy and time. Fix the ladder on the roof: The roof ladder is a practical tool. It provide ensure the ceiling at the top of the stair, allowing you to quickly and easily enter the steep ceiling. Comfort and convenience: The hook on the ceiling ladder can keep the ladder top away from wall, providing space for the elbow, making you feel more comfortable and convenient when working on the ladder top. Four mounting holes: The ladder top hook is designed with four mounting holes, which is convenient for you to choose the appropriate mounting holes according to the different spacings of the ladder and achieve the expected effect. Can also be connect to an extension staircase. Specifications: Material:Aluminium Type:Iron Plate/Tube/Stabilizer Size:Approx.440x350x75mm/17.32x13.78x2.95inch Stabilizer:Approx.430x410x60mm/16.93x16.14x2.36inch Package Includes: 1 Set Ladder Stabilizer note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.