7/8" X 1/4" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Extractors 1mm 41 pc Drill Index

1mm 41 pc Drill Index Dispenser

Flute Length: 1-1/16"

Its robust construction and ergonomic design make it a preferred choice among professionals seeking reliable tools for quality assurance and maintenance tasks

" - Sarah K

Trade Size: C-12C6

7/8" X 1/4" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Extractors 1mm 41 pc Drill IndexCounterboring 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 example, a flat seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. These counterbores are made of two piece construction, having an integral shank and counterbore cutter, and a