Stainless Steel Tactile Warning Composite Discrete with Carb Infill $1.45 – $1.65 Stainless Steel Tactile Warning Composite Discrete with Carborundum infill are made from 316 marine grade solid stainless steel and high grade carborundum insert. Their robust construction, longevity and elegant aesthetics made them ideal for busy high traffic environments, whilst adding a sense of class to any design. Select options