These Extra Sharp Coated GEM single edge blades are part of our premium single edge blade line. These blades are PTFE coated to reduce friction, allowing for a better cut and a longer lasting edge. The 62-0165/SKU: 62-0178 razor blades are always made from high quality stainless steel with aluminum backing. These single edge blades are a favorite among customers who want the benefits of a stainless steel razor blade. Also, these blades excel at cutting epoxies. Each shipped blade is protected in shelling paper.