The Graham Field-2644 and 2646 are professional-grade surgical instruments marketed under the Grafco brand. Mayo scissors are specifically designed with thicker, stronger blades compared to standard operating scissors, making them ideal for cutting through tough structures like fascia, tendons, and muscles. The straight 2644 model is typically used for cutting sutures or tissues near the surface of a wound. The curved 2646 model is engineered for deeper penetration into surgical sites, offering better visibility and maneuverability around organs and deep tissue layers.