EnhanceAir™ PRO Diffuser Rings by Complete Aquatics Liquid The EPDM rubber membrane is

The EPDM rubber membrane is wrapped around a hollow plastic tube

Includes hose barb multi-adapter to fit various hose sizes

Kit Includes: EnhanceAir™ 3/8" x 20' Self-Weighted Air Line

and includes the following components (left to right in the image) as well as instructions:

EnhanceAir™ PRO Diffuser Rings by Complete Aquatics Liquid The EPDM rubber membrane isThe EnhanceAir PRO Diffuser Ring has a unique 360 ring shape that improves water circulation and a raised design that provides maximum efficiency. This self weighted diffuser includes a back flow check valve and attaches to EnhanceAir PRO Self Weighted Air Line or other 3 8" self weighted air line. The base plate keeps the diffuser away from rocks, gravel and bottom debris. SKU UPC Code Description Dimensions Air Flow Range AE40121 653341177193 PRO