KREG 3/8-Inch Left-Hand Step Drill Bit for DK3100

This Heavy Duty Cobalt Steel Drill Bit Is Uniquely Designed For Use With The High-Production Pocket-Hole Machines. The Bit Itself Features A One-Piece Design Eliminating Clogging And Providing A Much Smoother And Faster Drilling Stroke Than Drill Bits With Replaceable Center Drills. Note: This Bit Features An Exclusive Left-Hand Thread Designed For The Center Spindle Of A Dk 3100 Only (H6828). Will Not Work With Standard Kreg Jigs Or Other Pocket-Hole Machines.