Ritlee 225 Wood Chipper (Hout Kerver) Tractor Mounted, gravity feed with its various combinations. Also below Ritlee 225 Wood chipper with Mk2 Grinder. Ritlee 225 Wood Chipper Gravity feed Tractor Mounted. Will chip brush and wood to a diameter of 180 mm with ease, this will drop by up to 20% the dryer the wood. 6 cu meter of chips per hour.