The Spyderco Manbug CPM SPY27 (brand part no. MPCBL) is a 1.96-inch folding knife that fits comfortably on a keychain yet cuts with the authority of a much larger blade. It’s built with Spyderco’s proprietary CPM SPY27 steel, developed with Crucible Industries to supercharge the cobalt-enriched chemistry of VG-10 with niobium, nitrogen, and higher volumes of carbon, molybdenum, and vanadium. The Manbug is a natural fit for shooters, hunters, and everyday carriers who want a genuine locking backup blade small enough to go unnoticed until it’s needed for opening packages, cutting cordage, or handling small chores in the field.

Key Specifications

• The blade measures 1.96 inches, small enough for keychain carry but still a fully functional cutting tool.
• It’s made from CPM SPY27 powder metallurgy steel for an exceptional balance of edge retention, toughness, and corrosion resistance.
• The blade has a PlainEdge, full-flat grind with a satin finish for clean, controlled cutting.
• It locks open with a back lock mechanism, giving it real locking security despite its small size.
• The handle is fiberglass-reinforced nylon (FRN) molded in a distinctive cobalt blue.
• A Bi-Directional Texture pattern on the handle provides secure grip in a small package.

Frequently Asked Questions

Does the Manbug lock open like a full-size knife? Yes, it uses a genuine back lock mechanism rather than a simple slip joint, despite its keychain-friendly size.

What blade steel does it use? CPM SPY27, Spyderco’s proprietary powder metallurgy steel built on VG-10’s cobalt-enriched chemistry.

Is this knife meant for heavy-duty tasks? It’s designed as a compact backup and everyday utility blade for light cutting chores, not a replacement for a full-size working knife.

Buy the Spyderco Manbug CPM SPY27 Folding Knife

A quality backup blade belongs on every keychain, and the Manbug delivers premium SPY27 steel and a real lock in a knife small enough to carry anywhere. Order the Spyderco Manbug from our pocket knives lineup and our Lubbock, Texas team will get it ready for fast shipping.