Drum Unit Rebuild Kit CANON iR2520, iR2525, iR2530, iR2535, iR2545, iR ADVANCE 4025, iR ADVANCE 4035, iR ADVANCE 4045, iR ADVANCE 4051, iR ADVANCE 4225, iR ADVANCE 4235, iR ADVANCE 4245, iR ADVANCE 4251, GPR-34, 35, 42, 43, NPG-50, 51, 56, 57, C-EXV32, 33, 38, 39-Kit Drum Unit Rebuild Kit:1,Long Life OPC Drum;1,Drum Cleaning Blade;1,Primary Charge Roller - 150K