Spyder 19025 1/8-1/2 & 3/16-7/8 Step Bit Set

Description

• Proprietary Mach-Blue Armor Plating is a super hard surface plating that retains sharper cutting edges, and reduces heat build-up and cutting friction resulting in faster cuts and exceptionally long drill life.
• Impact rated 1/4 speed hex won’t slip in conventional 3-jaw chucks and
  ideal for use in quick change impacting power tools.
• Optimized 135 self-centering split point cutting geometry won’t walk or wander even on pre-hardened or curved surfaces.
• Advanced M-Series alloy tool steel construction and proprietary heat treatment increase drill bit durability, rigidity and breakage resistance.
• Ideal for drilling stainless steel, mild steel, aluminum, stacked
  sheet materials and other tough-to-drill alloys.