The Sonic Universal Extender Axle Kit comes with (8) 6mm axles and (8) extender screws. The axles come in two varieties, one with a Square end, for Mission, Bauer or Alkali Skates, or the other the Round ends for most other skates, including old Nike/Bauer skates. This axles fit many skates and if can't find the axles specific to your brand of skates, these are worth a try. Due to their unique extending design, they can fit many skate frames and hold your wheels on tight. Details: ADJUSTABLE Thread partially for wider frames Thread more for narrower frames STRONG 1/4″ (6.35 mm) axles are built tough Solid steel at contact points with skate frame CONTENTS 10 Extender axles w/ screws NOTE: DOES NOT INCLUDE SPACERS