Holemaker Step Drill Spiral Flute 7-40.5mm
SPIRAL FLUTE STEP DRILLS
• The Titanium Nitride coating significantly increases the tool 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, 23.5, 25.5, 30.5, 32.5, 38.5, 40.5mm
Step Length: 3.0mm
Overall Length: 115mm
Shank: 12mm
