Holemaker Step Drill Spiral Flute 7-40.5mm

SPIRAL 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: 7 10.5 12.5 14.5 16.5 18.5 20.5 23.525.5 30.5 32.5 38.5 40.5mmStep Length: 3.0mmOverall Length: 115mmShank: 12mm