Professionally Ground For Perfect Crowns
A difficult tool to grind correctly. These are expertly done to give
maximum cutter strength and proper clearance as cutter tip enters
bore and shank approaches barrel. By taking careful cuts and
moving table back and forth, any degree of crown shape can be
Big Book Catalog, Issue:66, Page:472
SPECS: Bit ground on both ends - one for .210" (5.3mm) radius
cuts; the other for .250" radius.