The Rotary Lift RJ7100Y is a powerful air-operated scissor-style rolling jack assembly that takes your four-post or scissor lift to the next level. With this jack, you can lift your vehicle for "wheels-free" brake, suspension, and tire services, making maintenance and repairs easier and more efficient. The rail engaging wheel assemblies are adjustable, making it perfect for inside runway widths between 36 3/4" and 46 1/16." This jack includes two truck adapters and extension adapters so you can work on various vehicles. Additionally, this jack includes two different-sized rubber pads, 1 1/2'' and 3'', that cater to different needs. The latch assembly allows it to lock at full rise and release by actuating the lock handle. To make it easy to move, it has four heavy-duty urethane compression wheels. With a capacity to support 7,000 lbs., this rolling jack is a valuable addition to any mechanic's toolkit.