7/8" Hex Drive Output Adapter

$19.99 USD

Shipping calculated at checkout.

Orders before 2:30pm EST Ship Same Day Mon-Fri
Simple Returns

The 7/8" Hex Drive Adapter converts your gearbox output to a standard 7/8" male hex, allowing you to operate compatible trailer jacks with your drill-powered system. It’s a simple way to expand compatibility and eliminate manual cranking on trailers that use a hex-style drive.

Low stock

Product DETAILS

The7/8" Hex Drive Adapteris designed to extend the compatibility of your gearbox to trailers equipped with a 7/8" hex drive input. By installing directly into the output shaft, it converts your gearbox into a format commonly used on stock trailers, horse trailers, and certain enclosed trailers.

This drive style is easily identified by the hex-shaped input where a manual handle would typically attach. With the adapter in place, you can replace that manual operation with your drill-powered setup, maintaining the same speed, control, and ease of use as your gearbox system.

The design is straightforward and reliable, allowing for quick installation and seamless integration with no additional setup required. Once installed, it functions as a direct extension of your gearbox, delivering consistent performance across compatible trailer types.

Built for real-world use, the adapter is intended to handle repeated engagement and demanding conditions without compromise. It provides a practical solution for standardizing your setup across different trailers, reducing manual effort while increasing efficiency.

Fits any Gearbox

The 1.00" Dia. shaft slides into your gearboxes main shaft and pins into place with your clevis pin. One solution for all gearboxes.

Compatible with Universal Mounting System

Our wide selection of brackets makes mounting your Trailer Gearbox an easy no sweat task.

Added Versatility

Drive adapters add another level of versatility to your gearbox, allowing you to use them with equestrian trailers, grain hoppers, or other non standard drives.

Fleet Friendly Design

Carry one gearbox on your truck and use with multiple trailers. Gearboxes and adapters go on and off in seconds.

Heavy-Duty Construction

Our Drive Adapters are engineered to take a beating. Constructed from high strength heat treated steel you can be sure that your Adapters can stand up to heavy loads and the most extream weather.

WE BACK UP OUR PRODUCTS

At Trailer Gearbox, we stand behind what we build. If it’s not right, we make it right-no runaround, no excuses. Our 5-Year Warranty is backed by real human support and our NO-BS commitment to our customers.

Will this fit my Gearbox?

Yes, this adapter fits any of our gearboxes designed to fit over a 1 inch dia. jack handle shaft. Your adapter simply slides into the main shaft of your gearbox and is pinned in place.

What kind of bracket do I use for my adapter?

Trailer Gearbox offers multiple bracket options to fit even the most challenging applications. Generally with adapters we find the Handle Bracket to be the most versatile. To learn more about these brackets visit our BRACKETS page.

How do I install my Drive Adapter?

For installation instructions and application information click here:

Product Instructions:

What if I forget a Drill or my battery dies?

We recommend storing your original jack handle in your trailers toolbox or your tow vehicle. If you ever end up without your drill or a charged battery, its as easy as removing the clevis pin sliding off your gearbox and pining your old handle back on. While not as fast or easy it will get you out of a pinch.

Trusted by people who tow

From First-Timers To Fleet Owners, See What Real Customers Have To Say

Made in the USA

Proudly Designed, Built & Tested
In The United States

Simple Returns

If It’s Not Right, We’ll Make
It Right –– Guaranteed

Real Human Support

Talk To A Team That Actually
Uses The Product

Built For Real Work

Trusted by Haulers, Pros, and
Weekend Warriors Alike

Popular Products

Popular Products

7/8" Hex Drive Output Adapter