11/16" X 3/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective the Tekton 3-in-1 Stubby Torx

the Tekton 3-in-1 Stubby Torx Driver contains two different bit sizes and one nut driver size

Head Diameter 5/16"

These drill bits have a 1/2" reduce shank

Part Number: EZ-SK31315

Part Number: VibraTite1501Liter

11/16" X 3/16" Pilot Hole HSS Taper Shank Counterbore Shopify Collective the Tekton 3-in-1 Stubby TorxProduct 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