Heartless Creeper Wheels - 90A Green - Roller Derby Skate Wheels - Heartless Wheels is the only wheel brand 100% designed, focused, and dedicated to the agility minded skater. Heartless Wheels feature a true hollow core hub (cap and core) and 35mm narrow profile tire, which allows skaters to turn, juke, jump, and cut with unbelievable ease. We strictly focus on those roller derby skaters who look to gain the most agility and maneuverability possible. Heartless Wheels come in 6 hardnesses to give you the best options for your style of skating and the surfaces you skate on.