Knurling is a finishing process in metal material processing that creates a groove or pattern on the surface of a stainless steel sheet. It achieves by a rotary tool that presses the desired embossing pattern into the metal. Knurling is a decorative finishing process that forms different textures on the surface of the stainless steel sheet. By processing these raised textures, friction on the stainless steel surface has increased, and an anti-slip effect achieves.