SHOCKWAVE™ Impact Duty™ #8 1/2 - 1"

Hole range

• Minimum: 1/8"
• Maximum: 1"
• Steps: 9 total sizes

This makes it a large-range, all-in-one step bit—covering small pilot holes all the way up to 1" without switching tools.

Key Features

• SHOCKWAVE™ Impact Duty design – built for impact drivers (also works in drills)
• TiAlN coating (Titanium Aluminum Nitride) – up to 5× longer life than standard step bits
• Rapid Strike™ tip – faster starts with less walking
• Dual spiral flutes – up to 2× faster hole cutting
• SHOCKZONE™ shank – reduces breakage under high torque
• Laser-etched markings – easy size control while drilling

Best Uses

• Electrical panel holes (small → large in one bit)
• HVAC duct and sheet metal work
• Fabrication and enclosure work
• Enlarging existing holes cleanly
• Thin steel, aluminum, plastic

How it fits your step-bit lineup

• 9241 (#1): 1/8"–1/2" (small precision)
• 9243 (#3): 3/16"–3/4" (mid-range)
• 9244 (#4): 3/16"–7/8" (extended range)
• 9248 (#8): 1/8"–1" full-range coverage (this one)
• 9249 (#9): 7/8" & 1-1/8" (large knockout-specific)