The Shop Tuff 12 x 12-18 Adjustable Movers Dolly allows you to easily move those loads that are too heavy to be carried by hand. Moving heavy loads is not a problem for this Shop Tuff product. with a high weight capacity, a durable hard-wood frame, and a carpeted deck, this dolly is ideal for any heavy job. The four 3 in. propylene casters all swivel, making moving your loads a breeze. Adjust the size of the dolly easily with the spring-loaded pin, which makes the dolly the perfect fit for a wide variety of jobs. Collapsed, the dolly measures 12 in. x 12 in., but the spring-loaded pin allows the dolly to adjust from 12 in. x 12 in.-18 in., which makes the dolly the perfect fit for a wide variety of jobs. This Shop Tuff dolly will get the job done safely and efficiently.