Heartless 59mm roller derby wheels breaker 94a 4pksome of the most popular derby wheels with an improved formula design and now in 59mm so you can get lowerheartless 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 ga