HSS Drill Bit Stepped 13MM Shank Bits Drills. 1 x HSS Drill bits (Size Choice). 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm. 1/2" reduced shank allows cutting of larger holes using a standard 1/2" or 13mm, 3-jaw chuck.
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