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Why Choose Drill America - 1-15/16-18 UNS HSS Tap Set
Choose the Drill America - 5/16-17/32 60 degree Deburring Tool for unmatched reliability and performance
reliable oxy-fuel welding and cutting
Size: 3-3/4"-4
Enhanced Ventilation: Features a Modacrylic Mesh vented back
53/64" X 1/4" Pilot Hole HSS Straight Shank Counterbore - High Performance & Durable Cutting Tool | Drill America Annular Cutters 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