This sleeve is glued into a **1.5" PVC Schedule 40 fitting** to snugly fit a **1.75" OD shop vac hose** into it. Note that **this only fits into a 1.5" PVC fitting** (an elbow, a tee, a coupler) and **not into the 1.5" PVC pipe itself.**
The fitting has a slight draft angle, so make sure the end that says "PVC" goes in first with the end "VAC" towards the end where the hose will be inserted. Make sure to rough up the PVC with sandpaper to help ensure the glue gets a good bond.