KING NIPPLES ARE CONSTRUCTED OF POLYPROPYLENE FOR RUST RESISTANCE. USED FOR LOW PRESSURE SUCTION AND DISCHARGE HOSES WITH THE HANDLING OF WATER AND OTHER VARIOUS LIQUIDS. MALE PIPE THREADS ARE THE SAME AS THE HOSE I.D. ALLOWING IT TO GRIP THE TUBE OF THE HOSE FIRMLY TO PREVENT ANY LEAKING. REQUIRED CLAMPS TO ATTACH TO HOSE. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov -