pneumatic air texturing gun for sand dust/matt/glit finish design on gold,silverpneumatic air texturing gun for sand dust matt glitter finish effect to create design on gold,silver jewellery > this is very simple pneumatic device to create sand dust glitter matt finish effect on jewellery like wedding bands,rings, gold tooth. > this air pen work with air so need air pressure 50 to 90 psi > this is pneumatic air device > this pen come with diamond point tip which create glitter effect on metal surface. > you can buy additionally