Wearwell 572.EdgingFCFRBK 24/Seven Cutting Fluid Resistant Anti-Fatigue Heavy Duty Edging, Female, 3" x 39" x 5/8" Thickness, Black CFR (Cutting Fluid Resistant) - A reverse engineered compound designed to resist the effects of mineral oil based cutting fluid To use around mineral oil based cutting fluids Green rating 50 percent post industrial material (gr only) 1 year warranty