LEKOMESH Cobalt Step Drill Bit - 4-22mm Four Spiral Flute Step Drill Bit M35 with Impact Ready Unibit for Stainless Steel Metal Aluminium Copper Wood Plastic

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Product description

  • Size Diameter 4-22mm; Total length 80mm; Working length 55mm; 10 step drill bit (4 6 8 10 12 14 16 18 20 22mm), quick change hex shank.
  • 118 Split Point Automatic centering, the drill accuracy is significantly improved, chip removal effect is better, and as a unique effect on stainless steel drilling, industrial aluminum titanium nitride coating with thermal, abrasion and corrosion protection.
  • Application Step drills include a variety of sizes suitable for use in a wide range of materials and different diameter drilling needs for aluminium, copper, wood, plastic.
  • Little Tips The use of cutting oil or water cooling is recommended for continuous cutting to greatly extend the service life. Don't use impact and hammering mode, you can mark the holes by wrapping the tape for controling easily.
  • Recommended Machine Corded drill, cordless drill, benchtop drill. General hand drill in the range of 2000-5000RPM, for soft materials, slow down the speed (1000RPM).

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