Many Stihl and Nilfisk water blasters have a custom thread that their hose connects to the main water blaster on.  This is designed to restrict you to only being able to connect to genuine hoses.  Thier thread is very close to the normal M22-14 thread, but about 1mm different so that other hoses won't fit.

This adapter converts the thread on those Stihl and Nilfisk's to an M22-14 thread, allowing you to connect hoses like the Rockcar green flexible hose to a Stihl or Nilfisk machine.

This is new, we had to have it specially made, it has been tested by two customers on Stihl and Nilfisk machines.  We have sent it to two customers for testing and they are fitting and working well.  Thanks a lot for those like Matt who helped us test these.  We'll add more photos as we get them from customers.

"I've used the fixing for the Nilfisk Blaster fits and works great." - Matt C, Auckland. 

The adapter itself comes apart, the inner section has two close but different threads, the larger end is the M22-14 thread that fits the Rockcar hose and is industry standard.  The thinner thread is the thread that is on the Nilfisk and Stich output from the water blaster pump on the machine where the hose connects.  The other part is a female threaded cover section that is th4e Nilfisk/Stihl thread, this connects over the top of the smaller thread on the adapter and overlaps into the output thread on the water blaster machine.  There is a rubber o ring seal in this.  you thread this end in over the thread on the water blaster of your Stihl or Nilfisk, converting this to the normal M22-14 thread.  You then have an M22-14 thread extending from the machine, to which you can easily fit connect the Rockcar green flexible 10M hose, or the professional trigger and 10m kink resistant flexible hose upgrade kit from Rockcar.