Sonic Rollerblade Extender Axle KitThe Sonic Rollerblade Extender Axle Kit will get you out of a pinch when you lose an excel and need one. Sonic's unique design allows it to fit securely on a wide range of skates that use a 6mm axle, such as hockey, fitness, and aggressive skates. With axle portions at each end and a more centered connection point the Sonic Extender Axle can fit a variety of skate frames. Thread partially for wider frames or thread more for narrower frames. The axle