Infinity Tools 4" to 3" Reducer

4" to 3" Reducer adapts a 4" hose to a 3" hose or fitting. 4" end also fits inside the port on our 115-311 blast gate. 3-15/16" O.D. x 3-11/16" I.D. on one side. 3" O.D. x 2-3/4" I.D. on the opposite side.