Product Details:

This CRL 4 Piece Fractional Gauge Drill Set comes in a resealable plastic pouch.

Four high speed steel drills with reduced sure grip knurled shanks for 1/4 inch (6.4 millimeter) chucks, 714 series.

Additional Product Information:

Sizes are: 5/16, 3/8, 7/16 and 1/2 inch (7.9, 9.5, 11.1 and 12.7 millimeter)