Cutting Diameter Length Description Series Page 6.61 - 2.125 - 3.125 QA - 3XD 531 9.38 Adjustable Cartridge Drills 1.88 - .625 - 2.000 QF - 3:1 534 6.00 Indexable Flat Bottom Drill 1.000 - 1.500 BU 537 Eccentric Adjustment Bushings .500 - 2.000 .50 - 2.0 15S 538 Center-Cutting Bore Tools .438 - 2.000 .44 - 2.0 15C 540 Indexable Counter Boring Tools .366 - .453 - 1.260 XS 542 .504 Qwik Ream Shanks - Inch 9.33mm - 11.5mm - 32mm XS (Metric) 543 12.8mm Qwik Ream Shanks - Metric .500 - 1.250 XLB 544 Carbide Reaming Head - Inch 12mm - 32mm XLB (Metric) 545 Carbide Reaming Head - Metric .500 - 1.250 XSA 546 Carbide Reaming Head - Inch 480