compatibility with your for shop vacuum using this essential muffler diffuser attachment, designed specifically for models including 113170660, 113179715, 11317099, and more. Note: This attachment does not fit model 113.177280. This replacement part, identified by part number CMXZVBE38660, is perfectly suited for wet/dry vacs featuring a 2-1/2 in. diameter blowing port. It's an ideal match for models CMXEVBE17595 and CMXEVBE17596 among others. Experience significantly reduced air noise during operation with this vac muffler diffuser. It not only minimizes sound but also effectively diffuses the airstream to curb the dispersion of debris and dust, enhancing your workspace environment. Colour:Black Material:Plastic + sponge The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 x Vacs Vacuum Diffuser Muffler Cmxzvbe38660 1 x Muffler Diffuser Foam 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.