Updated 4.7 mm outer diameter for rear hubs: Reduces risk of breakage and increases durability
Available in 9 mm and 10 mm sizes: Allows selection for front or rear axle and compatibility with various track hubs
Sold in pairs: Convenient for replacing both sides of the axle
Compatible with Formula and other track hubs: Offers flexibility for different bike setups
Summarized by Shop
Because most people usually overtighten their axle nuts like uncivilized gorillas, these little bastards break all the time on Formula hubs. Replace 'em and keep a few extras on hand just in case human restraint ain't your thing.
These will work on other track hubs too but you may need to get creative with some axle spacers.
Sold in pairs
Thickness
4.7 mm (smaller diameter)
Sizes
9 mm or 10 mm
Quantity
2 nuts per pack
Color
Black
Compatibility
Formula track hubs, other track hubs (with possible axle spacers)