Lenox Vari-Bit Step Drill Bit ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$127.21
$75.29
Lenox LENOX 30887-Vb7 Vari-Bit 7/8-Inch Step Drill Bit With 3/8-Inch Shank For 1/2 Inch Conduit

Lenox Vari-Bit Step Drill Bit High Speed Steel 7/8-Inch 3/8-Inch Shank

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Model: 30887VB7
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$127.21
$75.29
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Lenox Vari-Bit Step Drill Bit High Speed Steel 7/8-Inch 3/8-Inch Shank

Professional Step Drilling Tool for Electrical Applications

The Lenox Vari-Bit Step Drill Bit delivers superior drilling performance for electrical conduit installations and professional applications. This 7/8-inch high speed steel step drill bit with 3/8-inch shank 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 Cutting Performance

  • Split Point Design - Enables faster penetration and reduces bit walking for precise hole placement and professional results
  • Patented Two Flute Design - Cuts fast, clean, round holes with superior chip removal and reduced heat buildup
  • Enhanced Flute Design - Removes chips rapidly for continuous cutting performance and extended tool life
  • Steam Oxide Coating - Adds durability and wear resistance for long-lasting professional performance

Professional Drilling Applications

  • Starts On Contact - Immediate cutting action without pre-drilling for efficient workflow and time savings
  • Accurate, Burr-Free Holes - Clean cutting results that eliminate secondary finishing operations
  • 50% Faster Starts - Rapid initial penetration for increased productivity on electrical installations

Technical Specifications

Bit Diameter: 7/8 inch (.875 in), Shank Diameter: 0.25 inch (1/4 inch), Chuck Size: 1/4 inch, Product Primary Material: High Speed Steel, Length: 3 inches, Width: 1.1 inches, Height: 6.1 inches, Depth: 4 inches, Weight: 0.12 lbs, Product Group: Electrical, Power Source: Non-Energy Using

Installation & Usage

  1. Secure the step drill bit in a 1/4-inch chuck drill or driver
  2. Mark the drilling location and ensure proper workpiece support
  3. Position the split point design at the marked location for immediate contact
  4. Apply steady pressure while drilling to maintain consistent cutting speed
  5. Allow the enhanced flute design to remove chips naturally during operation
  6. Complete the hole to desired diameter using the stepped cutting edges

Professional Applications

Ideal for:

  • Electrical Work - Conduit installations, junction box mounting, and electrical panel preparations
  • HVAC Applications - Ductwork connections, refrigeration line installations, and ventilation system mounting
  • Plumbing Projects - Pipe routing, fixture installations, and water line connections
  • Construction Tasks - Metal framing, structural connections, and building system installations
  • Maintenance Operations - Equipment repairs, system upgrades, and facility modifications
  • Industrial Applications - Manufacturing equipment installation, machinery mounting, and production line setup
  • Automotive Work - Body panel drilling, exhaust system modifications, and accessory installations
  • General Metalworking - Sheet metal fabrication, bracket mounting, and custom metal projects

High Speed Steel Advantage

The high speed steel construction provides exceptional hardness and heat resistance, maintaining sharp cutting edges even under demanding drilling conditions. This premium material choice ensures consistent performance across various materials while delivering the durability and precision that professional contractors require for electrical and general drilling applications.

Why Choose Lenox Quality?

With decades of cutting tool innovation and manufacturing excellence, Lenox has established itself as the trusted choice for professional contractors, electricians, and tradespeople. Our commitment to quality engineering, rigorous testing standards, and continuous improvement ensures that every Lenox step drill bit delivers the reliable performance and long-lasting durability that professionals depend on for their most demanding drilling applications.

Manufacturer Resources

Product Specs

Battery Included:
No
Bit Diameter:
.875 In
Chuck Size:
1/4 in
Net Lit Ion Y N:
No
Power Source:
NON-ENERGY USING
Product Primary Material:
High Speed Steel
Recommended Safety Equipment:
Safety glasses
Shank Diameter:
0.25
Product Type:
Step Drill Bit
Product Group:
Power Tools & Accessories
Product Length:
3 in
Product Height:
6.1 in
Product Weight:
0.12 lbs
Product Width:
1.1 in
Product Depth:
4 In
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Country Of Origin:
United States

Lenox 30887VB7 – Frequently Asked Questions

1) Will a step drill bit go through sheet metal and enclosures without a pilot hole?
No pilot hole is needed. The Lenox Vari-Bit uses a split point that starts cutting on contact and resists walking, so you can mark the spot and go straight in on panel sheet, junction boxes and light-gauge metal. Support the workpiece and keep steady pressure so the two-flute geometry clears chips as it cuts.
2) Is a high speed steel step bit like the Lenox Vari-Bit suitable for stainless or only mild steel?
The 30887VB7 is high speed steel with a steam oxide finish, which holds its edge under heat and handles mild steel, aluminum, and sheet stock well. HSS is the general-purpose grade for metal drilling, so it will cut harder alloys but at reduced speed and tool life. For heavy or repeated work in hardened or abrasive material, a carbide-tipped cutter is the better choice.
3) Should I use a step drill bit or a hole saw for drilling panel knockouts?
For light-gauge metal, a step bit like the Vari-Bit is usually the faster call: it starts on contact with no pilot hole, cuts a round burr-free hole, and gives you several diameters in one tool up to 7/8 inch. A hole saw needs a pilot and leaves more burr, but it is what you want above the step bit's diameter range or in thicker stock where a step bit cannot reach full depth.
4) Is the Lenox Vari-Bit step bit cordless-drill friendly for overhead work?
It weighs 0.12 lbs, so it adds essentially nothing to a cordless drill and is comfortable for overhead ceiling and panel work. It is a non-powered cutting tool, with no battery of its own.
5) What PPE should my crew wear when using this step drill bit on metal?
Safety glasses are the stated requirement. Drilling sheet metal throws hot chips and curls, so eye protection goes on before the trigger is pulled, and gloves plus a deburring tool are worth having at hand for the swarf.
How fast can I get the Lenox 30887VB7 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Lenox 30887VB7 come with a warranty?
Absolutely. The Lenox 30887VB7 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Lenox 30887VB7?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Lenox 30887VB7 from ZenSupply?
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