Fat spanner 4mm Allen Key wrench - Road, MTB, Cyclocross
- Hardened steel and precision cut.
- Hardened steel used for extended life.
- Coated handle for user comfort.
- FAT SPANNER 4mm Allen Key is ideal for all Road, MTB and Cyclocross 4mm bolts.
About this bike tool
The Fat spanner 4mm Allen Key wrench - Road, MTB, Cyclocross is a useful addition to your home workshop or saddle bag, helping you keep your bike in good working order between services.
Fitting and advice in Sheffield
Not sure it's right for your bike? Visit our Moor Market shop in Sheffield city centre or our Stocksbridge shop and our mechanics will check compatibility for you. We can also fit it in our workshop or as part of a service, which you can book online or by messaging us. Fox Valley Bikes is Sheffield's local bike and e-bike shop, fixing bikes properly for over 20 years.

























