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were originated to solve the problem of tap breakage in through hole tapping
Get the Drill America - 8 x 3/16 x 1-1/4 Plain Metal Slitting Saw and experience the perfect combination of performance and protection for your professional needs
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3/4" X 5/16" Pilots for Counterbore - High Performance & Durable Cutting Tool | Drill America Repair Kits Why Choose Drill America -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