Blade E500C Solid Carbide Scriber Blade (E500C). The E500C is a carbide tipped scriber. (E500C). Scriber can be reground. Great for Outer Edges, Flat Surfaces, Sheets, Slot / Keyways & Inner Straight Corners. Good for use on Steel, Aluminum, Copper, Brass, Cast Iron, Stainless Steel, Hardened Steel and Plastics