The SD64 4x4x4 work platform comes with full independent suspension and 4 wheel drive, the SD64 4x4x4 work platform can cope with a wide range of working environments and still offers the same impressive reach as the SP64 , and 4 wheel steer gives the operator enormous flexibility to maneuver once on site.. The extra maneuverability available from the 4 wheel steer option coupled with the special "Turf Tires" make the SD64 4x4x4 work platform ideal for working on sensitive surfaces such as grass.