1-3/8" X 3/8" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Size 25/32"

Size 25/32"

stout shank that is heat treated to 52–56 HRC to make the blade strong without being brittle

deep-length sizes

Glass and tile drills have a tungsten carbide tips and are suitable for glass

rather than its corners • High-Performing Steel Alloys – The sockets in this set are made from 4140 Chromium-Molybdenum (Cr-Mo) and have a corrosion-resistant manganese phosphate coating

1-3/8" X 3/8" Pilot Hole HSS Straight Shank Counterbore Shopify Collective Size 25/32"Product Description 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