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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
making them ideal for construction
allowing ease of movement during long work hours
Size: 5/16"-64
Overall Length: 6-1/16"
Design: Long sleeve with front zipper and snap closures
51/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Drill Bits making them ideal for constructionCounterboring 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
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