Auto service hose windshield washer vacuum and crankcase ventilator"thermoid" 50 feet spool - fits 3/16 inches nipple dia. 5/32 inch Similar to the SAE J1037 specification. Will not deteriorate from heat, weathering, or ozone. Maintains its flexibility even at low temperatures. EPDM tube construction. 7/64 inches fits 1/8 inches nipple, 5/32 inches fits 3/16 inches nipple.