Gridfinity Holder for 3/8 Extensions

Keep your socket extensions organized and easy to grab with this Gridfinity-compatible holder designed specifically for 3/8″ drive extensions from the Pittsburgh line by Harbor Freight. This organizer securely holds your extensions upright, preventing them from rolling around in drawers or toolboxes and keeping your workspace clean and efficient.

Designed to fit the standard Gridfinity system, this holder drops neatly into drawers, tool chests, or modular storage setups. Each slot is sized to snugly fit Pittsburgh 3/8″ drive extensions, offering a reliable hold while still allowing for quick, one-handed removal.

Features:

• Compatible with Gridfinity modular storage systems
• Holds 3/8″ drive extensions (Pittsburgh / Harbor Freight)
• Upright storage for clear visibility and fast access
• Snug fit to prevent tipping or rattling
• Clean, compact design ideal for drawers or portable toolboxes

Perfect for mechanics, DIYers, and home garage setups, this Gridfinity holder helps keep your Pittsburgh extensions organized, protected, and always right where you need them.

This is the set I used https://www.harborfreight.com/38-in-drive-quick-release-extension-bar-set-4-piece-67976.html

I did have a couple extra extensions laying around that I included.  A matco and a craftsman.

Magnets used from amazon https://amzn.to/4q7Vkb3