Greenlee 50353560 Bit Extensio...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$149.17
$99.17
Greenlee 50353560 Bit Extensions

Greenlee 50353560 Bit Extension, 7/16 IN Hex Shank, 18.800 IN Length

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Model: 50353560
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$149.17
$99.17
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Greenlee 50353560 Bit Extension, 7/16 IN Hex Shank, 18.800 IN Length

The Greenlee 50353560 Bit Extension is built for electricians and contractors who need extra reach when boring deeper wood for cable and conduit runs. Featuring a 7/16 IN hex shank for secure chucking in compatible drills and drivers, this extension measures 18.800 IN in overall length with a 23/32 IN head diameter, giving installers the added length needed to bore through thick joists, studs, and multi-member framing without repositioning the tool. The head measures 1.100 IN in height and 1.150 IN in width, supporting a robust, low-profile connection point that resists wobble under load. Manufactured in the US, this Greenlee accessory is designed to work with compatible bit systems for demanding electrical rough-in work, and its precise dimensions make it a reliable addition to any electrician's drilling toolkit.

Key Features

  • Overall Length: 18.800 IN extension length lets you bore deeper into wood framing without repositioning your drill.
  • Head Diameter: 23/32 IN head diameter provides a solid interface for compatible bit heads.
  • Hex Shank Size: 7/16 IN hex shank fits standard high-torque drill chucks for secure, slip-resistant engagement.
  • Product Height: 1.100 IN head height for durable, low-profile engagement with the drive system.
  • Product Width: 1.150 IN width supports a robust connection point that resists wobble under load.
  • Application-Specific Design: Purpose-built for boring deeper wood, ideal for electrical and low-voltage cable routing through framing members.
  • Made in the USA: Manufactured domestically for consistent quality control.

Technical Specifications

  • Application: For Boring Deeper Wood
  • Country Of Origin: US
  • Head Diameter: 23/32 IN
  • Product Height: 1.100 IN
  • Product Length: 18.800 IN
  • Product Size: 7/16 IN Hex Shank
  • Product Width: 1.150 IN
  • Volume: 23.782 CI

Typical Applications

  • Boring Deeper Wood for Electrical Cable Runs
  • Framing Member and Joist Penetrations
  • Residential and Commercial Rough-In Wiring
  • Extended-Reach Drilling Applications
  • New Construction and Remodel Electrical Work

Why Greenlee?

Greenlee bit extensions are engineered with precise hex shank dimensions and durable construction to hold up to repeated boring through wood framing on demanding electrical jobs. Manufactured in the US, this 50353560 extension delivers the reach electricians need for efficient, code-compliant cable and conduit installation. With a 7/16 IN hex shank, 18.800 IN overall length, and a 23/32 IN head diameter, this extension is built to match the exacting standards professional electricians expect from their tool accessories. Trust Greenlee for dependable tool accessories built for professional electrical work, day in and day out on the jobsite.

Manufacturer Resources

Product Specs

Country Of Origin:
United States
Head Diameter:
23/32 IN
Product Height:
1.100 IN
Product Length:
18.800 IN
Product Size:
7/16 IN Hex Shank
Product Width:
1.150 IN
Volume:
23.782000000000004 CI
Product Type:
Bit Holder & Extension
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Group:
Power Tools & Accessories
Application:
For Boring Deeper Wood

Greenlee 50353560 – Frequently Asked Questions

1) Will the Greenlee 50353560 bit extension fit my drill, or do I need a specific chuck?
The 50353560 extension has a 7/16 inch hex shank, so it drops into a right angle drill or impact driver that takes a 7/16 inch hex, not a standard round three jaw chuck. If your drill is a keyed or keyless chuck, you can still grip the hex flats, but the hex shank is what it is built around.
2) How much extra reach does the Greenlee 50353560 bit extension give me when boring through studs?
Overall length is 18.8 inches, so you get roughly a foot and a half of added reach past the chuck. That is enough to bore a run of holes through a bay of studs or reach down into a joist cavity without moving the drill body into the framing.
3) What size hole does the Greenlee 50353560 extension need to pass through?
The head measures 23/32 inch in diameter, so any hole the extension has to follow the bit through must be at least 3/4 inch. Pair it with an auger or selfeed bit that cuts 3/4 inch or larger, otherwise the head binds at the entry hole.
4) Is the Greenlee 50353560 meant for wood boring or can I use it for masonry and metal?
It is a wood boring extension. Greenlee lists the application as boring deeper wood, which means auger bits, ship auger bits, and selfeed cutters through framing lumber. Masonry and steel drilling call for a different tool entirely.
5) What is the exact part number for the Greenlee bit extension with the 7/16 inch hex shank?
Greenlee part number 50353560. The 7/16 inch hex shank and 18.8 inch length are the two specs that identify it on an order, and it is made in the US.
How fast can I get the Greenlee 50353560 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 Greenlee 50353560 come with a warranty?
Absolutely. The Greenlee 50353560 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 Greenlee 50353560?
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 Greenlee 50353560 from ZenSupply?
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