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WVEK，WVEM Progressive divider is a device of pieces from 3 components ; ahead-piece (A),mid-piece (M) and end-piece (E).Mid-piece is a working piece, 3 pieces at least needed , each piece has tow outlets, so 6 outlets at least for various type of divider . It can combine also by M-piece of different output . If outlets connect in series , the oil flows from upper to lower outlet and increasing output , can compost a divider with only two outlets to supply lube point. Inter the pieces seal with O-ring it is reliable. To select and use this divider must design in advance about type , model , series and crosslink , to fit the needs of output of concentrical lubrication system.