Holemaker Step Drill Straight Flute 4-12mm

STRAIGHT 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: 4, 5, 6, 7, 8, 9, 10, 11, 12mm Step Length: 3.75mm Overall Length: 65.5mm Shank: 6mm