Heartless 62mm roller derby wheels creeper 90a 4pkheartless 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 possiblethis is a great slim wheel suitable for uncoated concretec