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Crafted from a solid slab of Austrian K110 tool steel measuring 6.5mm in thickness, the ERK-01 TOPO stands out as a truly versatile and rugged fixed blade knife designed for extreme applications, excelling particularly as a pry tool.

Engineered with a modified chisel point for unsurpassed strength, the ERK-01 TOPO is exceptionally well-suited for tasks involving prying and investigative probing. In consideration of these functionalities, the frontal edge remains deliberately unsharpened, catering to the needs of EOD specialists.

The spine of the ERK-01 TOPO boasts robust straight-cut saw teeth, making it highly effective for sawing through dry wood and a range of challenging field materials including plastic and bone. Its ergonomic G10 handle scales, designed for a comfortable yet secure grip, incorporate a nonslip surface. These scales are affixed using sturdy steel Torx screw fittings.

Enhancing its utility, the ERK-01 TOPO features a fully chamfered tang and handguard, partial blade serrations, an extended hammer pommel equipped with jimping, and a lanyard point. Safeguarding against corrosion is a resilient Teflon coating.


  • One-piece full tang construction.
  • Austrian made 6.5mm Bohler K110 (D2) tool steel. The entire tool is overbuilt for outstanding longevity.
  • Easy to maintain razor-sharp polished cutting edge with partial blade serrations.
  • Hard-wearing, low friction Teflon coating mitigates glare and protects against corrosion.  Available in black, dark earth, and ranger green colour options with signature topography pattern.
  • Modified chisel point and blade design are optimized for prying and heavy-duty cuttings tasks.
  • Bevelled edges. The entire perimeter of the handle is machine bevelled to reduce abrasion and increase comfort with non-gloved hands.
  • Aggressive straight cut saw teeth along the tool’s spine will effectively cut dry wood, along with a variety of hard in-field materials including plastic and bone.
  • The oversized handguard affords the user the ability to choke up high for delicate shaving, or take a lower grip for more dynamic chopping & slashing tasks.
  • US made G10. Handle scales are ergonomically contoured for maximum grip/control with non-gloved hands.
  • Handle scales are secured by steel torx fittings.
  • Crusher pommel ideally suited for breaking glass and other hammering tasks.
  • Pommel lanyard hole allows for paracord attachment.
  • US made Kydex. We believe the carry system supplied with our tools is as important as the tool it protects. Each sheath is precision molded for secure retention and easy maintenance.  All ERK-01 sheaths are supplied with a belt carry system as the primary attachment method, eyelet holes around the sheaths perimeter serve as secondary attachment option.
  • To complete the package, the ERK-01 is presented in Halfbreed Blades’ signature foam lined presentation case complete with warranty statement, certificate of authenticity, specifications card, morale patch, and vinyl logo sticker.


Action: Fixed Blade

Blade Steel: K110 D2 (59-60 HRC)

Blade Edge: Polished Partially Serrated

Blade Finish: Teflon™ Coated

Blade Style: Chisel Point

Blade Length: 5.11” (130mm)

Blade Thickness: 0.25” (6.5mm)

Handle Material: G10

Handle Thickness: 0.98” (25mm)

Overall Length: 10.23” (260mm)

Sheath Type: Molded Kydex®

Sheath Weight: 4.23oz. (120g)

Knife Weight: 13.47oz. (382g)

Overall Weight: 17.70oz. (502g)

Mounting: Belt & PALS/MOLLE®


Black, Dark Earth, Ranger Green