Holemaker Step Drill Straight Flute 4-20mm

STRAIGHT FLUTE STEP DRILLS
• The Titanium Nitride coating significantly increases thetool life by providing the following benefits:• Increases surface hardness to 85HRC• Ceramic surface reducing friction by up to 30%• Especially resistant to cold welding.• Suitable for cutting a wide range of materials.
Sizes Included: 4 6 8 10 12 14 16 18 20mmStep Length: 4.0mmOverall Length: 75.0mmShank: 8mm