Juice Jolt Wheels are never lacking for grip, making them ideal for skaters frequently skating on polished concrete and other slick-as-ice surfaces. Unlike most 'hybrid' wheels that only offer single durometers somewhere in the low 80's, this third generation of Jolts offers a range of hardnesses from 80A-86A. Clean, square edges help keep the response and control of these wheels manageable while you're busy NOT worrying about sliding out of the turn or rolling over that crack.