We don’t make 'cheap' gear. We make gear that works. If you want a holder that melts in July, go to the other guy. If you want one that lasts 20 years, buy ours.

We build professional-grade storage solutions for the trades. Whether it’s for your service truck, van, garage, or your Packout, our products are engineered for a safe, secure, and permanent fit.

Most 3D-printed tool holders on the market are made from brittle PLA—basically fancy cornstarch that’ll warp in a hot truck or crack the first time you hit a pothole.

• Industrial-Grade ABS: We print exclusively in high-temp ABS. It won't turn into a puddle in your toolbox, garage, or truck during a 100°F+ summer.

• 40 Years of Experience: We don’t build "toys," and we don't sell "hobbyist" junk. We build gear that stands up to actual daily abuse.

• Field-Tested: With thousands of prints sold, we don't ship prototypes; we ship solutions.

What’s Included: (5) Milwaukee M12 straight mount or angled mount tool holders. (Available in Red or Black)

Our ABS is significantly tougher than the "cheap stuff," but 3D prints have a "grain" (layer lines). Think of it like a piece of oak—it’s strong as hell, but a high-impact drop onto a concrete shop floor can cause a shear break.

• The Reality: This handles 150°F+ temperatures easily. It’s a precision-engineered organizational tool, not a hammer. Treat your gear like you treat your tools.

Mountain303D is an independent manufacturer of aftermarket organizational solutions. We are not affiliated with, authorized, or endorsed by Milwaukee Tool. All brand names and logos are the property of their respective owners. The use of any brand names is solely for identification and descriptive purposes.