A never used still in the crate model BXH42-BLK. Hydraulically driven by connecting to skid steer external ports. It is gravity self feeding with 4 inch chipping capacity. Takes at least 25 GPM standard flow, weighs 740 lbs and is 57 inches in width. Connects with a universal skid steer plate and includes hoses and couplers. This unit is black not the yellow one used for illustration purposes