3/4" X 1/4" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Welding Supplies Size: 2-3/8"

Size: 2-3/8"

Stepped Point Cobalt Drill Bits start easier

4043 Aluminum Alloy: Made from premium-grade 4043 aluminum

Enhance your safety and performance with the Drill America - 1-1/4-18 UNS HSS Taper Tap

Crossbar Options: Flat (tack) or arched (no tack)

3/4" X 1/4" Pilot Hole HSS Taper Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Welding Supplies Size: 2-3/8"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 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