Improve the dust collection capability of an old Belt Sander with the Belt Sander Dust Collection Upgrade Kit. This kit allows you to seamlessly switch from a 1-1/4" dust collection port to a double-sized 2-1/2" diameter dust collection port for superior performance. The safety grid inside the fitting keeps fingers away from the moving belt if the hose is disconnected. Note: Only for Shopsmith Belt Sanders made before August of 1987.