Uploaded January 2026 | Updated September 2026, 1 week ago
crkt.com/fidus-folding-knife-with-liner-lock?sku=4220
Designed by acclaimed knifemaker Michael Walker, the Fidus™ /fee-dus/ is a modern everyday carry inspired by Walker’s custom designs. Its name—derived from the Latin word fidus, meaning trustworthy and loyal—perfectly captures the spirit of a knife you can rely on day after day. The stonewashed blade is made from 12C27 steel, striking a balance between edge retention, toughness, and easy maintenance. A textured glass-reinforced nylon handle keeps weight to a minimum while ensuring a secure grip in any condition. A thumb stud paired with IKBS™ ball bearing pivot provides fast, smooth and confident deployment.
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4220 Fidus™ Specifications
Blade length: 3.22" (81.81 mm)
Blade edge: Plain
Blade thickness: 0.13" (3.20 mm)
Overall length: 7.25" (184.15 mm)
Weight: 2.2 oz (62.37g)
Blade Steel: 12C27
Blade Finish: Stonewash
Handle: Glass-Reinforced Nylon
Style: Folding Knife with Liner Lock
crkt.com/fidus-folding-knife-with-liner-lock?sku=4220
Designed by acclaimed knifemaker Michael Walker, the Fidus™ /fee-dus/ is a modern everyday carry inspired by Walker’s custom designs. Its name—derived from the Latin word fidus, meaning trustworthy and loyal—perfectly captures the spirit of a knife you can rely on day after day. The stonewashed blade is made from 12C27 steel, striking a balance between edge retention, toughness, and easy maintenance. A textured glass-reinforced nylon handle keeps weight to a minimum while ensuring a secure grip in any condition. A thumb stud paired with IKBS™ ball bearing pivot provides fast, smooth and confident deployment.
See what’s new at CRKT: crkt.com/new-releases
Sign Up For Our Newsletter: crkt.com/social-newsletter-sign-up
Follow us on TikTok: tiktok.com/@crkt_official
Follow Us On Instagram: instagram.com/crkt_knives
Follow Us On Facebook: facebook.com/crktofficial
Follow Us On X: twitter.com/CRKTweet
4220 Fidus™ Specifications
Blade length: 3.22" (81.81 mm)
Blade edge: Plain
Blade thickness: 0.13" (3.20 mm)
Overall length: 7.25" (184.15 mm)
Weight: 2.2 oz (62.37g)
Blade Steel: 12C27
Blade Finish: Stonewash
Handle: Glass-Reinforced Nylon
Style: Folding Knife with Liner Lock
