Pro Plug #8 Replacement Bits For Use with Pro Plug System Tool - 5 Pack of Bits Bda261c Replacement Bits for the Smart-Bit PRO-PLUG Tool Contains 5 Standard Size Replacement Drill Bits Overall Hole Depth, Including Countersink Portion is 1-1/2" (38mm) For Use with #8 (8.5mm) PRO-PLUG Tools Part of the Smart-Bit PRO-PLUG System