Roller Derby Girls Tracer Adjustable Inline Skate Review SpringBuster Inline Skates April 18, 2018July 13, 2018Inline & Roller Skating, Outdoor Recreation, Roller Derby, Skateboards & Scooters, Skates, Sports & Outdoors 0 Comment Reinforced Nylon Frame 64/72mm Urethane wheels Excellerator 608ZB bearing Soft boot support system with triple cam-lever buckle, push button adjustment system, and comfort fit padding