D-1 Spas Ozone Diffuser Stone, 1/2in NPT, Green

New style (after 1990) green color, threaded ozone diffuser used with ozone pump on Dimension One spas, Spa Butler and Evolution spas and others using Ramco ozone pumps. These Ozone Diffusers Stones are placed on the end of the ozone hose, to diffuse the ozone, into smaller bubbles. These can become clogged over time and should be replaced every 12-24 months.