Letter Gauge R Drill Bit – 0.339″ dia. 4-3/4″ len. Rockwell Hardness: Point C65 Shank C34. Century Drill & Tool. 135° Split Point. Fully Ground from billet blanks.
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11606 Letter Gauge Drill Bit, Size F
Model 11606. Part Number 11606. Shank Type Straight. Included Components HSS Drill Bit. Rockwell Hardness: Point C65 Shank C34. Letter Gauge F Drill Bit – 0.257″ dia. 4-1/8″ len. Unit Count 1 Count.