Drum Unit Rebuild Kit CANON iR1730, iR1730i, iR1730iF, iR1740, iR1740i, iR1740iF, iR1750, iR1750i , iR1750iF, iR ADVANCE 400, iR ADVANCE 500 GPR-39, NPG-55, C-EXV37-Kit Drum Unit Rebuild Kit:1,OPC Drum1,Drum Cleaning Blade - 100K