Big Horn 11449 4-Inch by 1-Inch stepped adapter can be cut to the size you need to fit your machine port or smaller hose. This unique adapter is tapered from 4-Inches outside diameter to 1-Inch outside diameter. Flat portions are at sizes 4-Inches 3-Inches 2-1/2-Inches and 1-Inch for hose to hose splices. Hose clamps are required (not included)