The Spyderco Bug (brand part no. C133P) is one of the smallest folding knives Spyderco makes, designed to live on a keychain rather than take up pocket space. Made by Spyderco, the 1.27-inch blade is machined from 3Cr13MoV stainless steel in a PlainEdge profile, all-stainless-steel construction throughout. It has no locking mechanism at all, relying instead on a stiff, notched pivot in the slip-joint tradition, keeping it simple, light, and always within reach for small cutting tasks.

Key Specifications

• The 1.27-inch blade keeps this knife small enough to carry on a keychain.
• It is machined from 3Cr13MoV stainless steel, an affordable steel suited to light-duty tasks.
• Its PlainEdge profile gives a clean, continuous cutting line.
• The knife is a non-locking slip-joint, with no back lock or liner lock.
• The all-stainless-steel construction keeps the whole knife compact and durable.
• Its tiny footprint makes it easy to carry on a keychain or in a coin pocket.
• The knife is manufactured at Spyderco’s Seki City, Japan factory.
• There is no pocket clip; the knife is meant to be carried on a keychain ring or lanyard.
• The fully stainless-steel build resists corrosion better than a mixed-material handle.

Frequently Asked Questions

Does the Bug have a locking blade? No, it is a non-locking slip-joint, held open by tension at the pivot rather than a lock.

Is it meant to be a primary everyday-carry knife? Not typically. Its tiny size makes it best suited as a backup or keychain tool for light cutting tasks.

What steel does the blade use? 3Cr13MoV stainless steel, an affordable steel suited to light-duty use.

Buy the Spyderco Bug Stainless PlainEdge

A tiny, always-there cutting tool for keys, packages, and everyday odds and ends. Order it from our Spyderco lineup of pocket knives and our Lubbock, Texas team will get it shipped quickly.