1-3/4" x 7/16" Shank |Mag-Bit 626.2816| Hole Cutters | 1 Piece size-8-jun Patented nut design and multi-thread

Patented nut design and multi-thread are available in two versions:

Single spur for clean cut holes

This caulking type machine screw anchor features a zinc alloy cone with a lead ring that results in quick setting

Square Drive with Nibs Under Head for Flush Surface Finish

It also has a curved back

1-3/4" x 7/16" Shank |Mag-Bit 626.2816| Hole Cutters | 1 Piece size-8-jun Patented nut design and multi-threadDiameters 11 16" through 3" Cuts up to 3 16" deep Auto ejecting slug Diameters 11 16" through 3". Cuts sheet metal, stainless steel, iron, cast iron, copper, abrasive materials such as high density resin and metal plate. Cuts up to 3 16" deep. Auto ejecting slug.