Holemaker Step Drill Spiral Flute 6-30mm

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: 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 26, 28, 30mm Step Length: 3.0mm Overall Length: 98.0mm Shank: 12mm