A neat high quality pair of Billet machined wheel extenders to suit all 5th scales running 5mm pins (Losi 5T/Krakens/MCD) and (baja with HD shaft etcs). The thread of the extender is modelled off the Losi/kraken thread.
 
These extenders have a nice little design feature of encapsulated pins with grub screws. So the pins never come out and no ugly rubber rings around the pins to retain them!
 
Note-   You need to use Losi wheel nuts if you install these on a baja
 
Fairly chunky and not the lightest on the market as made from top of the range 2024 aircraft aluminium (look it up, awesome stuff for RC -  arguably superior to the more brittle 7075).