100mm (4" )to 25mm (1") Dust Hose Adaptor is tapered from the 100mm (4") O.D to the 25mm (1") O.D. Cut the adaptor at the desired diameter to fit to your machine port or smaller I.D. hose. Flat portions are at sizes
of: 100mm (4"), 75mm (3"), 63mm (2-1/2") and 25mm (1") for hose to hose splices. Hose clamps are required.