THIS IS PART NUMBER 1661-E-29 BRUSH AND 1661-E-30 BRUSH SPRING.       This brush is also used IN the No 50 GANG CAR       INCLUDED IN THIS AUCTION IS 24 OF LIONELS MOST POPULAR BRUSHES AND 24 SPRINGS. Some purists would say 12 pairs since 2 are needed in each application. USED FOR ALL OF LIONELS MOST POPULAR WHISTLE TENDERS.  SOME OF THE TENDERS THAT USE IT ARE:2046W,736W,6026W,671W,2671W,2466WX,6466WX,2046W-50,2426W,2671WX,746W,1875,2020W,6020W234W,233W.  THEY ALSO FIT A LOT OF  STEAM ENGINES MOST NOTED THE 1600 SERIES OF STEAM ENGINES Including the 1120 and 6110 engines. ALSO USED WITH VARIOUS OTHER LIONEL MOTORS.   IF NOT SURE EMAIL ME.  I SELL OTHER BRUSHES AND PARTS AS WELL SPRINGS FOR BRUSHES. SHIPPING with Insurance is $4.99. THANK YOU FOR LOOKING.