Halo hex key skewer setlightweight 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 15x3mm cone spanner recess cut into nut just in case the tab cannot operate features cr mo rods black anodised alloy end cover and nut steel no turn tabbed nut serrated alloy frame grip surfaces 15mm cone spanner holding