Wisdom 115 Piece Drill Bit Set Titanium Nitride Tin Coated

Set features industrial-quality roll-forged M2 high speed steel bits that are titanium coated to 102 Rockwell hardness. Set includes 60 wire gauge bits numbered 1 through 60 26 lettered bits A through Z and 29 fractional bits 1/16″ through 1/2″ in 1/64″ increments. Larger bits W through Z are made for a 1/2″ drill chuck only not included and may not fit in a standard 3/8″ hand-drill chuck. Bits come packaged in a 3-section indexed enameled steel case for ease of storage.