Includes (2) 330003-85 Ball Bearings New, Bulk Packed Genuine OEM Replacement Part # 330003-85-2PK Consult owners manual for proper part number identification and proper installation Please refer to list for compatibility Compatible with the following: Porter Cable: 635, 635, 635, 6640, 6640, 6640, 6641, 6641, 6641, 6642, 6642, 6642, 6645, 6645, 6645, 7406 inch, 7406 inch, 7406 inch, 7406 inch, 7349, 7349, 557, 557, 557, 557, 7649, 7649, 7649, 1002, 1002, 1002, 121 Oscillating Spindle Sander, 352 Sander, 352 Sander, 352 Sander, 352 Sander, 352 Sander, 660 Disc Sander / Polisher, 661 Disc Sander / Polisher, 662 Disc Sander / Polisher, 662 Disc Sander / Polisher, 662 Disc Sander / Polisher, 7800 Sander, 7800 Sander, 7430 4, 7751, 7751, 7751, 7801 Sander, 634 IN, 634 IN, 634 IN, 259385 Sander, 543 Quick-Change, 543 Quick-Change, 543 Quick-Change, 97549, 97549, 97549, 632 632 632 7750, 7750, 6623 Fastener Driver, 6623 Fastener Driver, 6625 Fastener Driver, 6625 Fastener Driver, 7541 Driver, 7541 Driver, 7541 Driver, 7541 Driver, 7542 Driver, 7542 Driver, 7542 Driver, 7542 Driver, 7542 Driver, 7544 Driver, 7544 Driver, J-7544 Driver, J-7544 Driver, 7545 Driver, 7545 Driver, 7545 Driver, 7545 Driver, 7545 Driver, 7416 4, 304 Disc Sander: 304 Disc Sander, 351 Sander, 351 Sander, 351 Sander, 351 Sander, 351 Sander, 399 Cut-Out Machine, 619 " VSR, 619 " VSR, 619 " VSR, 619 " VSR, 619 " VSR, 620, 620, 620, 620, 620, 621 VSR: 621 VSR, 621 VSR, 621 VSR, 621 VSR, 7739, 7739, 352VS Sander, 305 Sander / Polisher, 305 Sander / Polisher, 7540, 7540, 7540, 7540, 633, 633, 633, 631 631 631 664 " T-Handle, 664 " T-Handle, 664 " T-Handle, 666 T-Handle, 666 T-Handle, 666 T-Handle, 7549 Saw