Axle security skewer* from Hexlox. Sold in singles - please check sizing below before purchasing. 5mm hex tool to adjust the tightness.
*skewer hubs required in order to use this product.
100mm for all front wheels
130mm for rear wheel (CS650c, Sport and Mini Velo models)
135mm for rear wheel (CS26 and Bisou models)
100mm for standard front wheels.
130mm for rear wheel on standard modern road bikes
135mm for rear wheel on standard Cycle Cross and MTB bikes