Reinforced polypropylene.
Key Product Specs
Hose Diameter (in.) 1 1/2
Connector Type King Nipple
Thread Style Male Thread / Hose Barb
Material Type Glass Reinforced Polypropylene
Working Pressure (PSI) 100 at 0 deg. F, 125 at 70 deg. F, 70 at 150 deg. F