Long, continuous lengths in coils as indicated below. Conforms to performance specifications for appropriate working pressures. Approved by National Sanitation Foundation for drinking water use. Made of black virgin polyethylene. Limited 25 year warranty. No. 18105: 3/4", 100' No. 18110: 3/4", 400' No. 18115: 1", 100' No. 18120: 1", 300' No. 18125: 1-1/4", 100' No. 18130: 1-1/4", 300'