Tank Modellbau track tension adjustors for Heng Long Panzer IV / Asiatam Early pattern idlers

Tank Modellbau track tension adjustors for Heng Long Panzer IV, for use with the Asiatam Early pattern metal idler wheels with bearings.  Finely CNC machined aluminium components.  The track tension can easily be adjusted from outside the tank, includes illustrated fitting instructions (German language). 

Please note two nuts (product code 555) and two end caps (product code 558) are required to fit this item.