15x3mm cone spanner recess cut into nut, just in case the tab cannot operate. The "Nut" features a steel Halo "no-turn tab" to help make it easeir to tighten or loosen the hex through-bolt. New Halo Hex Bolt 100/135mm Front & Rear Bicycle Skewers Set.
These are 'boutique' skewers. They work great if you need fresh skewers and add some flash. I prefer bolt-on over QR, so these solved that. I ditched the anti-spin tab, because it only got in the way.
Well, the weight savings by upgrading from quick release alone makes these worth it. They are stylish and much more secure. I really dig them, I dig them deeeep