Homemaker Step Drills Spiral Flute (Various Sizes Available)
The Titanium Nitride coating significantly increases the tool life by providing the following benefits:
Increased 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
Specifications:
SD4-20mm
Sizes: 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 Diameter: 12mm
SD5-25mm
Sizes: 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25mm
Step Length: 3.0mm
Overall Length: 83mm
Shank Diameter: 10mm
SD6-30mm
Sizes: 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30mm
Step Length: 3.0mm
Overall Length: 98.0mm
Shank Diameter: 12mm
SD7-40.5mm
Sizes: 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 Diameter: 12mm