The IRWIN construction jack is designed for lifting objects weighing up to 330 lbs. Having such a helper allows you to do various jobs on your own and save time in the process. The maximum lifting height is 10 inches in 1/4 inch increments. With the help of a jack, you can not only lift heavy objects, but also level them. For example, windows or doors during installation, hold appliances or furniture at a certain height. The device is also useful when laying floor coverings, such as tongue-and-groove boards - the jack will ensure its tight fit. The design is made of alloy steel. Lifting is performed by pulling the trigger. To remove the jack after the work is completed, simply use the quick release lever.