Recycled Rubber - 60A - Rubber Sheets and Rolls - 1/4" Thick x 4ft Width x 8ft Length - Black Recycled rubber with minimum tensile strength of 300 PSI Hard durometer of 60 Shore A Nominal Approximate weight: 1/4" weighs 1.25LBS per square foot Pre-cut widths and lengths available in 3 thicknesses (5mm, 1/4", 3/8") Always stocked and shipped within 24 hours with a 3-year Rubber-Cal warranty