SBR rubber with minimum tensile strength of 725 PSI (5 MPA) * This product is tough enough to be used as a snowplow rubber blade * This black rubber is very affordable and available for immediate shipping! * Hard rubber with a durometer of 65-75 offers limited pliability and elasticity * This general purpose rubber is available in 8 thicknesses (1/16, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1)