Slime Balls - 54mm 95a White Roskopp Face Two Reissue Hardline Skateboard Wheels (4 Pack)Slime Balls Reissue Roskopp Face Two White Hardline 54mm, 95a Slime Balls Wheels in white 95a high performance urethane featuring legendary Santa Cruz Rob Roskopp Face Two graphics. Slime Tech 95a high performance urethane offers a more forgiving durometer for rough terrain with easy, consistent power slides and bark you normally get with a harder urethane. Hardline shapes feature a wide road surface for stability and consistent slide with a hard edge