31/64" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 The reducer has a spring-loaded

The reducer has a spring-loaded ball detent that lightly secures the socket by engaging its through hole

Shank Size: D

Tekton T-handle keys have slightly chamfered edges and a smooth top face to optimize engagement with fasteners

Vibra-Tite #: 111

The jaws are made from 4130 chromium molybdenum steel

31/64" X 3/16" Pilot Hole HSS Straight Shank Counterbore Quantity:1 The reducer has a spring-loadedProduct 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