7/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank - High Performance & Durable Cutting Tool | Drill America Hole saws Backed by Sawyer's commitment to

Backed by Sawyer's commitment to quality and performance

making them an essential addition to any machining setup

6 Flute chatterless countersinks are designed to provide more metal removes than the 1

50mm HSS Drill Bit Kit and experience the perfect combination of performance and protection for your professional needs

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7/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank - High Performance & Durable Cutting Tool | Drill America Hole saws Backed by Sawyer's commitment toCounterboring 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