Mystery Engineering Grade 4-Pack

ABS / ASA / HT-PET+ Filament Grab Bag

Level up your 3D printing with our Mystery Engineering-Grade 4-Pack, a surprise bundle packed with premium, high-performance materials. Each box includes four random spools pulled from our production inventory—perfect for functional prints, mechanical prototypes, and makers who love experimenting with new materials.

What’s Inside?

Your 4-pack may include any combination of:

• Brand-new plastic spools

• Eco-friendly cardboard spools

• Older-generation plastic spools

Filament types include a surprise mix of:

• ABS Gloss

• ABS Matte

• HT-ABS Matte

• ASA

• HT-PET+

Colors? Totally Random.

Expect anything: bold colors, neutrals, pastels, specialty shades, or limited-run experimental colors. No two bundles are ever the same.

Why You’ll Love This Pack

• A unique mix of engineering-grade materials

• Guaranteed 4 full spools

• Great for functional parts, prototyping, and mechanical applications

• Eco-friendly variety with multiple spool types

• A fun, cost-effective way to explore new filaments

• Every box is a one-of-a-kind surprise

Unbox the unexpected—and discover your new favorite filament for tough, reliable prints.