Makita Step Drill Set 4-12mm 4-20mm 4-32mm Spiral Flute Titanium Coated D-41903

Recommended For - Plastic, Non-Ferrous Metal, Sheet Steel, Alloy Steel & Cast Iron

2x Faster than straight flute with less vibration

Spiral Step Drill Bits provide the following benefits:
• Faster Drilling
• Longer Lifetime
• Smoother Cutting
• Less Vibration

4-32mm
Step sizes: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 and 32mm
Total Steps: 15
Overall length: 102mm
RPM Range: 400-680
Flute Type: Spiral
Shank type: three flat 10mm straight shank

4-20mm
Step sizes: 4, 6, 8, 10, 12, 14, 16, 18 and 20mm
Total Steps: 9
Overall length: 75mm
RPM Range: 400-960
Flute Type: Spiral
Shank type: 1/4" hex shank

4-12mm
Step sizes: 4, 6, 8, 10 and 12mm
Total Steps: 5
Overall length: 65mm
RPM Range: 600-1130
Flute Type: Spiral
Shank type: 1/4" hex shank

NOTE: Bits are not to be used on Impact Drivers as the cutting edge will be damaged.