This pneumatic clamping tool is designed to work on most dry freight trailers. 51/2 inch reach that works on most dry freight vans. Light weight clamp weight is 18 lbs. This is a light weight and most durable clamping tool available in the industry. Eliminate noise pollution No rivet gun hammering . Makes the installation a one man job. Clamp tool systems are fully guaranteed and are serviced by Three Day Tool.