Lenox Step Drill Bit Variable VB8 3/16-7/8 Inch Hole Size

Lenox Step Drill Bit Variable VB8 3/16-7/8 Inch Hole Size

Professional Variable Step Drilling Tool

The Lenox Step Drill Bit Variable VB8 delivers superior drilling performance for electrical applications requiring multiple hole sizes from 3/16 to 7/8 inch. This 6.1-inch professional step drill bit provides exceptional cutting precision designed for professional contractors, electricians, and tradespeople, offering the proven performance and innovation that professionals expect from America's premier cutting tool manufacturer.

Professional Features & Benefits

Advanced Drilling Performance

• Patented Two Flute Design - Cuts fast, clean, round holes with superior chip removal and reduced heat buildup
• Split Point Design - Provides faster penetration and eliminates walking for precise hole placement
• Enhanced Flute Design - Removes chips rapidly for continuous drilling without clogging
• Steam Oxide Coating - Adds durability and extends tool life in demanding electrical applications

Professional Drilling Advantages

• 50% Faster Starts - Starts on contact for immediate drilling action without pre-drilling
• 2X Longer Life - Extended tool life reduces replacement costs and downtime
• Accurate, Burr-Free Holes - Clean cutting action eliminates secondary finishing operations

Technical Specifications

Hole Size Range: 3/16 to 7/8 inch variable steps, Overall Length: 6.1 inches, Width: 3 inches, Height: 1.3 inches, Weight: 0.181 lbs, Product Type: Step Drill Bits, Product Group: Electrical, Power Source: Non-Energy Using, Voltage Rating: 8V compatible

Installation & Usage

1. Select appropriate drill speed for material thickness and hole size requirements
2. Mark hole location precisely and ensure workpiece is securely clamped
3. Start drilling at lowest speed setting and gradually increase as bit engages material
4. Apply steady, consistent pressure while allowing flutes to clear chips effectively
5. Monitor drilling progress and stop at desired hole size step marking
6. Allow bit to cool between multiple holes to maintain cutting performance

Professional Applications

Ideal for:

• Electrical Installation - Conduit holes, junction box mounting, and cable routing in electrical panels
• HVAC Applications - Ductwork connections, refrigerant line penetrations, and equipment mounting
• Plumbing Projects - Pipe penetrations, fixture mounting, and water line installations
• Construction Work - Metal framing, structural steel drilling, and building system installations
• Maintenance Operations - Equipment repair, retrofit installations, and facility modifications
• Automotive Applications - Body panel drilling, exhaust system modifications, and accessory installations
• Sheet Metal Fabrication - Precision holes in thin to medium gauge metal materials
• Industrial Manufacturing - Production drilling, prototype development, and custom fabrication work

Variable Step Advantage

The variable step design eliminates the need for multiple individual drill bits, providing 3/16 to 7/8 inch hole sizes in a single tool. This reduces tool inventory requirements while ensuring consistent hole quality across all sizes, making it essential for electrical contractors who need multiple hole sizes for different conduit and cable requirements.

Why Choose Lenox Quality?

Lenox brings over a century of cutting tool innovation to professional step drill bit manufacturing, combining advanced metallurgy with precision engineering to deliver tools that meet the demanding requirements of electrical contractors, HVAC technicians, and construction professionals. The patented two-flute design and steam oxide coating represent Lenox's commitment to providing cutting-edge drilling solutions that increase productivity while reducing tool replacement costs.