Counterboring Is The Enlargement Of A Portion Of A Hole That Has Previously Been Formed. If The Counterbored Portion Is Shallow (1/8" Or Less), The Operations Is Usually Known As Spot-Facing; For...
For Broad Range Of Materials Such As Wood, Iron And Steel. Ideal For Production, Maintenance Or Portable Drilling Jobs.. 3/4" Shank Expands The Size Range Capacity Of Drill Chuck