ABRASIVE WHEEL AND DISC; TYPE: FLEXIBLE DISC; DIAMETER: 7 IN; BORE: 2 2.2 MM; ABRASIVE: REGALITE; GRAIN: 80; MAXIMUM SPEED: 8600 RPM; FIBER BACK; THE REMAINING USEFUL LIFE AT THE TIME OF DELIVERY TO THE PLANT SHOULD BE AT LEAST 50% OF ITS TOTAL LIFE, AND THE MANUFACTURING OR EXPIRATION DATE MUST BE INDICATED ON THE BOX OR ON EACH UNIT AS APPLICABLE; MANUFACTURER 1: 3M; N-PART 1: 051111-49611-4; MODEL 1: 747D