Super Cast Pigs use the same long lasting MDI polyurethane as all of S.U.N. Engineering's urethane products. Super Cast Pigs are available in three durometers, depending on the your requirements. The standard Super Cast Pig is made of 85 durometer (± 5 points) MDI polyurethane. Super Cast is also available in 65 (± 5 points) and 95 (± 5 points) durometers on request.