Replace part number: CMXZVBE38660, Muffler Diffuser Wet/Dry Vac Attachment 2-1/2 inch Compatible With Models Including:113170660,113179715,11317099,113177621,113170370, 113179155,113170380, 113179100.Does not fit the following for model: 113.177280 Compatible With for CMXEVBE17595 16-gallon 6.5- dry/wet vacuum cleaners and for CMXEVBE17596 20-gallon 6.5- dry/wet vacuum cleaners Easy installation: only need to connect to the workshop vacuum nozzle. This is not a filter, but an air noise reducer on a vacuum cleaner that helps control the airflow in the exhaust port. Helps reduce air noise and create a quieter work environment Please note: the physical slightly color difference or difference, does not affect the use, please do not mind! Colour:Photo Color Material:plastic Package Contents: 1 x Vacuum diffuser 2 x Replacement filter cotton Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.