12" Hole Saw Extension Plus Hole Saw Arbor 7/16" Hex end Extension 7/16 Hex Female to 7/16 Hex Male Hole Saw Mandrel with TCT Pilot Drill Deep Holes in Masonry 12 Long Hole Saw Adapter Extension

These Hole Saw Arbor Extension are a 12 inch Extension Bit with 7/16" Hex Male to 7/16" Hex Female includes 7/16 Hex Arbor with TCT Pilot Drill for Hole saws to Drill Deep Holes in Concrete Brick and Wood Hex Key Included to Lock Arbor in place and or change Pilot Drill for any HSS Pilot Drill. Heat Treated 12 inch Hexagonal Extension Fits Any 7/16" Hex Shaft Hole Saw Arbor - Hex Screw Secures and Tightens Hex Shaft of Arbor or 7/16" Drill Attachment. Use Arbor Extension Bit with our Tungsten Carbide Grit Edge Hole saws To Drill Deep Holes in Concrete Masonry And Brick Walls. Plumbers Tools for Drilling Holes for Pipes to go through walls and Electricians Tools for Drilling Holes through walls for electrical wires and conduit.