Mike Irie is a respected custom knife maker known for exceptional surface finishing work. A hand polished blade finish involves progressive hand work on the blade flat and bevel using increasingly fine abrasives — a process that produces a depth of reflectivity and surface quality that machine satin or production mirror finishes cannot replicate. On each 2025 Cambria 2 Custom 004, Irie finished the 154CM blade individually by hand. The result is a blade surface with visible clarity and mirror depth that distinguishes this custom run from any standard Cambria 2 production variant.

The 2025 Cambria 2 Custom 004 is limited to 80 serialized pieces, produced for Blade Show Atlanta 2025. Each knife is individually numbered. At 80 pieces this is one of the tightest run sizes in the 2025 BSA Pro-Tech custom lineup. Once stock sells through at authorized dealers like Knifeworks, the configuration will not be reproduced.

TechnoCarbo Copper is a proprietary carbon fiber composite with copper tones integrated into the laminate construction — warm metallic earth tones with the woven texture characteristic of carbon fiber. Unlike a dyed or coated surface finish, the color is part of the material throughout. On the Cambria 2 Custom 004, the TechnoCarbo Copper inlays set against grey anodized aluminum scales and a hand polished 154CM blade create a warm, refined colorway that is fully cohesive across every element of the knife.

The 2025CambriaCustom004 uses 154CM stainless steel with a compound grind and Mike Irie hand polished finish. 154CM is the high-chromium stainless Pro-Tech has trusted across their lineup for decades — reliable edge retention, good corrosion resistance, and straightforward sharpening on any ceramic or diamond medium. The compound grind geometry optimizes slicing performance while maintaining strength at the tip. The hand polish elevates the blade's surface presentation well beyond what a standard production finish delivers.

No. The Cambria 2 Custom 004 is a manual flipper — it deploys via a flipper tab on the blade spine with no spring or coil mechanism. It is legal in all US jurisdictions where folding knives are permitted and in most international destinations where automatic knives would be prohibited. No compliance form is required at checkout. The button lock provides the same positive lockup found on Pro-Tech's automatic lineup.

The Cambria 2 Custom 004 measures 7.78 inches overall when open with a 3.80-inch blade at 0.125 inches thick. Closed length is 4.50 inches. It weighs 3.35 oz. The tip-up right-hand clip is included for pocket carry.