DC240 color drum cleaning blade for Xerox DC 240 250 242 252 550 560 700 700I C75 J75 dcc5065 c6550 c7500 WC7655 WC7665 DC252 2 pieces dc 240 drum cleaning blade for xerox dcc 5065 7500 7501 dc700 5065 6500 6550 7500 7550 242 250 260