Features Made of high speed, hardened steel manufacturedSharp cross point head design; more accuratelySpiral flutes helps drill bits more effectivelyUniversal 1/4” (6.35mm) hexagon shank Code50- MB106, 50- MB108SIZE (MM)6, 8L1 (MM)45, 50L2 (MM)100, 100D (MM)6.35N.W. (G)15, 18PCS (PACK)10
