Convert-A-Ball Trailer Balls & Covers
Convert-A-Ball: The Original Interchangeable Trailer Ball System
Convert-A-Ball has spent over 85 years pioneering hitch ball technology, and nowhere is that expertise more evident than in their lineup of trailer balls and covers. As the innovator of the original Interchangeable Hitch Ball System, Convert-A-Ball solved one of towing's most persistent frustrations: swapping between ball sizes for different trailers. Instead of reaching for a wrench and wrestling with a corroded nut, the Convert-A-Ball system lets you change ball sizes in seconds using an integrated quick-release pin — no tools required.
How the Interchangeable System Works
At the core of Convert-A-Ball's trailer ball lineup is a precision-machined shank — available in 3/4" and 1" diameters — onto which interchangeable hitch balls snap and lock with an integrated pin. The most popular sets include three balls covering the three standard towing sizes: 1-7/8", 2", and 2-5/16", giving you the ability to connect to virtually any trailer coupler on the road. Each ball carries its own dedicated pin, so there is never any searching for a loose fastener mid-hookup.
This system exceeds the national SAE-J684-E standard for hitch balls, giving tow-vehicle owners confidence that the convenience of the quick-change design does not come at the expense of strength or safety.
Finish Options: Chrome, Nickel, and Stainless Steel
Convert-A-Ball offers their trailer balls in three distinct finishes to suit different priorities:
- Chrome Ball and Shanks — The classic finish, delivering a bright look and reliable performance for everyday towing.
- Nickel-Plated — Produced using a non-electric nickel-plating technology, this finish is corrosion resistant, non-magnetic, stain repellent, and provides uniform coverage even on hard-to-protect interior surfaces. It is also a more eco-friendly process compared to traditional chrome electroplating.
- Stainless Steel — The premium choice for those towing in harsh environments, coastal areas, or anywhere moisture is a concern. Stainless delivers superior corrosion resistance and long-term durability.
Covers, Storage Cases, and Accessories
Protecting your investment between towing sessions is where Convert-A-Ball's covers and storage accessories shine. Shank covers keep road grime and debris out of the hitch receiver when it is not in use. Purpose-built 3-ball plastic storage cases keep your interchangeable balls organized and within reach in the truck cab or toolbox — no more loose balls rolling around in the center console. These accessories are designed to complement the complete Convert-A-Ball system, ensuring every component stays clean, protected, and ready to work.
Why Towing Enthusiasts Choose Convert-A-Ball
Whether you regularly pull a utility trailer, a boat, a livestock hauler, or an RV, the Convert-A-Ball Interchangeable Hitch Ball System eliminates the need to carry multiple dedicated hitch ball assemblies. The combination of tool-free ball changes, industry-exceeding strength ratings, multiple finish choices, and smart storage solutions makes Convert-A-Ball a go-to name for anyone who tows more than one type of trailer. Explore the full selection of trailer balls and covers or visit the Convert-A-Ball brand page to see their complete towing product range.