Product Description: The 390-551 is a specialized 36° tangential double-tip knife blade, precision-engineered for the advanced T-Series cutting heads of Summa digital plotters and F-Series flatbeds. Unlike standard single-edge blades, the 390-551 features a unique double-tip geometry. This symmetrical design allows the tangential module to achieve higher throughput by significantly reducing the rotation required at corners and complex intersections, making it the premier choice for high-volume production environments.

Optimized for precision kiss-cutting, this blade features a shallow 0.25 mm maximum cutting depth, ideal for severing face-stock materials—such as self-adhesive vinyls, reflective foils, and masking films—without impacting the liner. The 36° angle provides the delicate point needed for intricate detailing and small-format graphics. Manufactured from high-density tungsten carbide, the 390-551 offers exceptional wear resistance and maintains a razor-sharp edge through demanding cycles of abrasive technical textiles and polyester fabrics. The 3.0 mm round mounting shank ensures a secure, vibration-free fit, providing the professional-grade stability necessary for the most complex digital finishing workflows.

Summa OEM-Quality tungsten carbide Blades at Wholesale Prices