Specification:
Manufactured to exacting tolerances using forged, heat treated steel.

Designed with a centering point, periphery cutting edge, 2 edges and recessed cylindrical shank.

Made in Austria.

Guaranteed for life.

Overall Length: 3-1/2" and fits 3/8" chuck and larger.

Standard Diameters, 312 Series
3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1-1/16", 1-1/8", 1-3/16", 1-1/4", 1-5/16", 1-3/8", 1-7/16", 1-1/2", 1-9/16", 1-5/8", 1-11/16", 1-3/4", 1-13/16", 1-7/8", 1-15/16", 2", 2-1/16", 2-1/8"

Metric Sizes, 310 Series 10mm, 12mm, 14mm, 15mm, 16mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm