This is a pair of Prism SC Rear Tires. Pro-Line is ready to bring the popular Prism tread pattern to the Short Course class! The Prism features a bunch of Ultra-Sharp Prism shaped Pins laid out in a unique pattern that grips the carpet better than Velcro®. The pins on the Prism are slightly smaller than the original Pin Point rear tire but there are many more of them, which results in faster and more consistent lap times. The Prism has been positioned with the knife edge pointed front to back and side to side for maximum grip and to stay sharp even as they wear down. The Prism tire is destined to change the carpet racing scene; be the first one with the fastest carpet tire yet, Pro-Line's Prism!