- Extra security against theft - 5mm hex CrMo axle

If wheel theft could be a problem, then these high-grade locking skewers and nuts will challenge even the most determined thieves. The KnoxNut features a one-of-a-kind nut protected by a super-tough free-floating outer ring, making it impossible to release your wheel with anything other than the special key. KnoxNuts can be installed on existing skewers or combined with the KnoxNut Skewer, a unique and unobtrusive blind-head cromoly skewer. The special forged key is lightweight and easy to carry. Use with regular 6mm allen key to unlock. All keys are marked with a unique serial number and replacement keys are only sold to consumers that have previously registered a key on deltacycle.com. Set Includes: - Front blind-head skewer with KnoxNut - Rear blind-head skewer with KnoxNut

Secure - Prevents theft instead of standard 9 mm quick-release skewers Quick Assembly - Use proprietary key on frame dropout Construction - Stainless springs with chromoly axle