Gerber P56928B (also referenced as OEM part number 556928B) is a high-precision replacement swivel knife blade designed for industrial vinyl cutters and plotter systems.

Key Specifications & Characteristics
Product Type: Swivel Plotter Blade / Swivel Knife
Blade Angle: Standard configurations include 45-degree (all-purpose) and 35-degree variants (ideal for intricate detail work and small lettering).
Material: Solid Fine-Grain Tungsten Carbide, engineered for high wear resistance during continuous cutting cycles.

Machine Compatibility
The P56928B blade is specifically designed to work with Gerber Scientific equipment, including:
Gerber GS Plotter Series (e.g., GS 15)
Gerber HS Plotter Series (e.g., HS 15 / HS 15 Plus)
Select Gerber digital cutting tables/systems requiring standard swivel blade toolholders.

Primary Applications
This blade is commonly used in sign-making and vinyl graphic production for:
Cut Vinyl Films: Standard 2–6 mil calendared and cast vinyls (such as Oracal 651 or Avery HP 750).
Graphics & Lettering: Cutting fine details, intricate wall graphics, and small lettering without tearing film edges.
Signage Materials: Window vinyl, vehicle wraps, and temporary display materials.

Usage & Setup Tips
Blade Extension: Set the blade depth so only enough tip extends to cut through the vinyl face film without scoring or penetrating deeply into the liner backing.
Swivel Inspection: Ensure the swivel toolholder housing spins freely and is clean of adhesive buildup to prevent drag marks on curved cuts.
Pressure Adjustments: Always run a test cut after replacing the blade, as tungsten carbide tips require precise downforce tuning to avoid premature dulling or chipping.