Sure-Grip Rock Black with Red Flame Roller Skates Review SpringBuster Roller Skates April 10, 2018July 13, 2018Inline & Roller Skating, Outdoor Recreation, Skateboards & Scooters, Skates, Sports & Outdoors, Sure Grip 0 Comment ROCK nylon boot and plate Sure-Grip Twister wheels ABEC -5 bearings and Carrera speed toe stop Available in men’s sizes, whole sizes only, medium width. Women should choose one size smaller. Recreation skating and beginner roller derby.