... FDW10C and FDW10N and FDW108, FDW10C series are centrifugal force technology, include of: FDW10C-26ST, FDW10C-VIP, FDW10C-26W, FDW10C-RE ... and cool. FDW10N series are nozzles with special high pressure technology, include of: FDW10N-ISUP, FDW10N-30W, FDW10N-RE, FDW10N-SWAN ... , FDW108-0308L It is special nozzles with special high pressure technology, so dont need the big, separate and high price pump ...