Suttner ST-555 Sand Blasting Nozzles and Head. Grain size of the sand 0,4 - 0,8 mm (DN 12) / 0,6 - 1,2 mm (DN 19).  Sand blasting nozzle made of high-performance ceramics. Inclusive 3 hardened stainless steel nozzles. Suttner ST-555 Sand Blast Nozzle Head.