DUCATI BEVEL TWIN POLISHED ALLOY BELLMOUTHS FOR 40MM CARBURETTORS MADE FROM ALUMINIUM SOLID BILLET NOT CHEAP PRESSED OR ROLLED TYPE UNUSED MEASURE 52MM INTERNAL THREAD DIAMETER 85MM OVERALL LENGTH END TO END LENGTH IS APPROX 60MM OVERALL LENGTH END TO END -HAVE MINOR MARKINGS/ SCRATCHES AND DARK BURNISHING IN CENTRE BUT NEVER USED PLEASE ASK ANY QUESTIONS BEFORE AS STRICTLY NO RETURNS UK POSTAGE £7 OVERSEAS -EUROPE £12-AMERICAS £13-REST OF WORLD £14