C133 Bug

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The C133 Bug is a very small, clip-less folder that was introduced in 2009. The Bug is part of the Non-Locking series.

Appearance in catalogs

The C133 Bug appeared in the following catalog:



History, mentionings etc. from the forums

Information from the Spyderco catalog on the web

"Aerodynamically the bumble bee shouldn't be able to fly but someone forgot to tell the bee. The flight of the bumble bee defies both nature and one’s expectations that something that small can perform such a grand maneuver. Like bumblebees, Spyderco Bugs perform unexpectedly. The Bug, not much larger than a bee, is our latest addition. Last year Spyderco started offering SLIPITS which are non-locking slip-joint knives. They have no locking mechanism holding the blade open, relying instead on resistant pressure at the pivot area when the blade is extended and being used. Bugs are part of the SLIPIT group.

The flat ground blade is 3Cr13MoV stainless steel available with a PlainEdge. The Bug’s handle offers a flat surfac­e for a small amount of engraving or embellishment and can be customized for use as jewelry or a gift item. Positioned on the end of the handle is a lanyard hole large enough to thread with a chain and be worn around the neck or slipped onto a key chain. The Bug is the smallest folder in our lineup."[1]


The C133 Bug is made in China.

SKU Handle Edge(s) Steel From/To MSRP Note Number made Grind Clip Clip positions Collectors club
C133 Stainless Steel PE 3Cr13MoV 2009- 7.95$ (2009) N/A Full Flat No clip N/A Main
C133SET Stainless Steel PE 3Cr13MoV 2012-2013 46.95$ (2013) Set contains: C133 Bug, C137 Honeybee, and C138 Grasshopper N/A Full Flat No clip N/A
C133BK Stainless Steel PE 3Cr13MoV 2020- $30.00 (2009) Features a black oxide coated blade, handle and pivot pin. N/A Full Flat No clip N/A Variant

Most collectible variation

Questions regarding collecting the C133

Some interesting questions we are looking for an answer to:

Questions with an answer:

Technical information

Measurements (mm and grams) of the C133 Bug:

Variation Length overall Length closed Length blade Length edge Hole Ø Blade thickness Weight
C133 73mm 41mm 33mm 29mm 5mm 1.75mm 12g

Measurements (inches and ounces) of the C133 Bug:

Variation Length overall Length closed Length blade Length edge Hole Ø Blade thickness Weight
C133 2 7/8" 1 5/8" 1 5/16" 1 1/8" 2/16" 1/16" 0.4oz


  1. The C133 Bug in Spyderco's online catalog