2-1/8" X 1/2" Pilot Hole HSS Taper Shank Counterbore BoltsandNuts.com Part Number DWDRSD1-9/32

Part Number DWDRSD1-9/32

Part Number: EZ-EZ-329-428

Part Number: EZ-T2015

The Tekton Reducer creates a solution for lost or broken sockets

2-1/8" X 1/2" Pilot Hole HSS Taper Shank Counterbore BoltsandNuts.com Part Number DWDRSD1-9/32Product 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