Disston 5 Piece Speed 4 Flute Wood Auger Drill Bit Set 16mm To 32mm, 78212
Model: 78212. 1/4" Grooved hex shank prevents slipping in drill chuck or bit extension (excluding the 32mm). Fits all standard 1/4" quick change chucks (excluding the 32mm). The sizes included in this set are: 16, 20, 22, 25 & 32mm.