JB Super nut locking ring kit complete for (Casa octopus rear hub nut) only

The JB Tuning locking ring kit for Casa octopus hub layshafts. 
The jb Super Casa Nut made from stainless steel and has the benefit of being able to use a 27mm nut and also a 24mm.
This JB super Nut will only fit the Casa Performance octopus rear hub and layshaft with the larger the thread. Not the  standard Lambretta layshaft.  And comes complete now with our super popular JB rear hub  locking ring 
Kit