The suction hose is too small for my shopvac. I went to Home Depot and bought a 1-1/2" x 1-1/2" PVC FPT x FPT No-hub Coupling, Internet #202310688 Model # 808 cNHC-150 Store SKU #678309 see last photo. I removed the steel jacket and i am using the rubber sleeve as an insert, see other photos. It works great, very snug. the sander is meeting my needs so far.