Halo xl hex key skewer set anodised alloy end cover and nut with cr mo threaded rod using an allen type hex key fitting lightweight sleek and an ideal upgrade for improved security as theres no qr lever the nut features a steel halo no turn tab making doing up these skewers and releasing them a lot easier than trying to hold the nut from spinning at the time features front 100mm 11mm thick rear 135mm 10mm thick cr mo rods black anodised alloy end cover and nut steel no turn tab