White nylon plastic with a matte finish and slight grainy feel.
About this Product
This is the same piston as my other one, only it is rescaled so that it would possibly work in stainless steel. As a "side effect" the price got really high, but Im uploading it anyway. Its just about 43mm across one side, other than that its almost identical to the smaler one except a few areas have been hollowed out to save material.
NOTE this model has not been printed yet and might not work