Propane Engine Engine Capacity Grinding Pressure Weights UP Grinding Pressure Weights DOWN Working Width Tool Holder Diameter Vacuum Hose Port Water Feed tank or hose connection Water Tank Capacity Propane Tank Capacity Machine Size LxWxH Crate Size LxWxH dust-proof planetary drive with upgraded chain new & IMPROVED water system with gravity-fed water from tank or hose EPA & CARB Blue Sky Engine WITH closed loop fuel control Easy-to-use integrated weights new rear wheel set for easy loading new optional accessories: A transportation wheel; also, a LEVER FOR LIFTING THE MACHINE UP led lights in front & back new adjustable handle bar charging phone station AND a stainless steel cup holder