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: 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25mm 

Step Length: 3.0mm 

Overall Length: 83.0mm 

Shank: 10mm