CNC tungsten‑steel flat Widia drag knife blades are solid‑carbide (tungsten carbide) flat‑stock knives used in non‑powered drag‑knife tool heads on flatbed digital cutters and CNC routers for thin to medium‑thickness flexible materials.

What they are
Flat Widia drag blades: flat shank, double‑ or single‑edge carbide knives that pivot in the holder as the machine “drags” them through the material.
“Widia” style: a common trade term for solid carbide blades with a flat shank, often used with MultiCam, Aristo,Zund,Colex,Esko Kongsberg and Summa similar flat‑blade systems.
Material: tungsten carbide (often called “tungsten steel” in listings), which gives high wear resistance and long life versus tool steel.

Typical geometry and specs
Shank: flat, commonly around 8 mm wide and ~1.5 mm thick in many Widia‑style blades.
Angles: commonly 45°, 50°, 55°, 60°, etc., depending on material and machine.
Cutting edges: single‑ or double‑edge; double‑edge blades can be flipped or rotated to extend life.
Cut length: often in the 8–12 mm range for flat drag blades, depending on the exact model.

Typical applications
Self‑adhesive vinyl, paper, thin plastics, and films (stickers, labels, decals).
Thin folding carton, corrugated, RE‑board, rubber mats, PVC, polypropylene sheets.
General packaging prototypes, signage, and craft/apparel cutting where a simple, robust blade is preferred.

Why use flat Widia drag blades?
Durability: solid carbide resists wear and keeps an edge longer than standard steel.
Cost‑effective: drag knives are generally cheaper and simpler than powered oscillating or universal tools.
Versatility: one blade family can handle many thin to medium materials just by changing angle or offset settings.

Selection tips
Match the blade angle to your material thickness and type (e.g., 45° for vinyl, higher angles for thicker or stiffer stock).
Ensure the flat shank thickness/width matches your holder (Widia‑style vs round‑shank systems are not interchangeable).
For abrasive or high‑volume jobs, prefer double‑edge solid carbide blades to maximize service life

• Shank Style: These specific tools utilize a flat-stock shaft design (as opposed to round cylindrical shanks), ensuring the blade drops perfectly locked into the specialized tool head without rotating loose under heavy resistance. 
• Blade Angle Selection: Use 45° blades for general-purpose vinyl, cardboard, and paperboard. Opt for 60° geometries when plunging through thick, dense foam core or sandblast resist materials to lower lateral drag forces.
• Wear Resistance: Uncoated Widia steel naturally resists heat, but advanced DLC (Diamond-Like Carbon) coatings can be applied to reduce friction further when cutting highly abrasive or gummy materials.