The Glock Field Knife. Overall, the knife measures 11.4 inches long, while the blade is 6.5 inches. The blade is made from spring steel treated with phosphate to resist corrosion. What makes this knife special is that one side of the blade has a plain edge with clip point style and the other has a saw edge. This knife can be used for cutting, opening bottles, or even as a weapon. The handle is made from black polymer, giving the knife a smart look. As part of the price is a sheath, also made from black polymer. Image may not be representative of color or style.