IRWIN Drill Bit Gauge, 1/16-to-1/2-Inch, 29-Hole (12092) REED 21-3/4 shell size | Cuts

21-3/4 shell size | Cuts up to 2-inch deep | Fits most standard arbors and competitive machines | Recommended for cast and ductile iron | Carbide inserts outlast bi-metal teeth

-For all hydraulic type grease fittings

secure grip on all of the hex nuts

In addition to the M12 FUEL™ SURGE™ 1/4 in

Highest quality Japanese spring resists fatigue for long service life Patented dual roller reaction bar system minimizes friction for increased accuracy Hardened steel tube will not deflect under strain and will not be scratched by internal parts

IRWIN Drill Bit Gauge, 1/16-to-1/2-Inch, 29-Hole (12092) REED 21-3/4 shell size | CutsSteel drill gauge for checking fractional bit diametersAmazon. ca Product DescriptionHeavy gauge steel, 6 1 2" L. X 2 3 8" W. Drill sizes 1 16" To 1 2" By 64ths. Hole sizes and decimal equivalents etched on face. From the ManufacturerIrwin fractional drill gauge made of steel this drill gauge is used for checking fractional bit diameter.