Quick Connect Push Pull Hole Saw Arbor 7/16 Hex End
With Quick Connect Pins For Hole Saws 1 1/4" To 8" Hole Saw Mandrel Has 7/16 Hex End With TCT Pilot Drill For Drilling Brick And Concrete We Also Include An Extra HSS Pilot For Drilling Wood Plastic And Steel Fits Any 1/2" Chuck Drill.
Just Pull Spring Loaded Pins Backwards And Screw Down The Hole Saw As Far As It Will Go Then Line Up The Holes, You Might Need To Unscrew Slightly To Get Pin Holes To Line Up, Then Just Push Pins Down Into The Holes. This Means The Hole Saw Is Running On The Pins And Not Running On The Threads Etc. Never Run A Hole Saw On The Threads Or You Will Ruin The Threads Of The Arbor And The Hole Saw When You Apply Pressure To The Hole Saw.