2Pcs 3.5" To 4" 89mm-102mm Blue Straight Reducer Silicone Hose Coupler

4" to 3.5" I.D. Straight Universal Silicone hose Coupler 4 layer polyester. 4 layer polyester reinforced High temperature silicone hose. Silicone is resistant to electrochemical degradation, however, are not suitable for use with oil or fuel.