Pneumatic Cylinder longer version

Pneumatic Cylinder made out of brass. 11,5cm --> 19cm (extended)
full functional and a item that any lego technic builder wants

my Pneumatic Cylinder made from brass

100% same power as an normal lego pneumatic cylinder
hand made!
the only difference is the weight (96g)

this aircylinder is made out of brass and modified on my lathe
the piston is RVS steel also modified on my lathe
the two air intakes are glued to the main tube

they are currently not for sell!

making one of these cylinders cost me a lot of time
also material costs are very high