7/8" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective reducing stress on the blade

reducing stress on the blade and extending its lifespan

Pilot Diameter #21

Part Number: 62X100DPPOAPL

Part Number DWRR22

these wrenches are versatile and durable

7/8" X 1/4" Pilot Hole HSS Straight Shank Counterbore Shopify Collective reducing stress on the bladeProduct 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