Sheffield 9STQRM6-30SD, 6-30mm Onsite Plus Step Drill - Spiral Flute

Features:
• Unique patented step tip design eliminates pre-drilling
• AlTiN Coated for longer sharpness & tool life
• Unique drill composition greatly decreases cutting heat & edge wear
• Dual cutting edges drill 3x faster, producing burr-free holes up to 3.5mm
• ¼" Quick-Change suits cordless drills & impact drivers