SuperSpeed cushion rubber is patented and is produced exclusively for Brunswick. The profile is very close to the K55. SuperSpeed cushion rubber incorporates a thin layer of cotton canvas vulcanized into the top and back surfaces of the cushion. This feature results in controlled ball penetration and greater accuracy in rebounding. Because of this, SuperSpeed claims 40% more consistent than a leading competitors rubber. It also has a canvas cloth on the back surface to assure good adhesion to the wood rail. 48″ per piece Set of 6. Fits 7 ft, 8 ft or 9 ft tables.Features:SuperSpeed cushion rubber is patented and is produced exclusively for BrunswickHas canvas cloth on the back surface to assure good adhesion to the wood railSuperSpeed cushion rubber incorporates a thin layer of cotton canvas vulcanized into the top and back surfaces of the cushionThis feature results in controlled ball penetration and greater accuracy in reboundingBecause of this, SuperSpeed claims 40% more consistent than a leading competitors rubber