NON-METALLIC TUBE DIAMETER NOMINAL: 1/4.; INTERNAL DIAMETER: 4.35 MM; EXTERNAL DIAMETER: 6.35 MM; WALL/SCHEDULE THICKNESS: 1.00 MM; MATERIAL: POLYETHYLENE; FINISH: WHITE; WORKING PRESSURE: 120 PSI AT 23 DEGREES CENTIGRATE; WORK TEMPERATURE: -62 TO 66 DEGREES CENTIGRATE; MANUFACTURER / STANDARD REFERENCE: ASTM D 1248 PARKER/DETROIT: 44P ADDITIONAL INFORMATION RECORD THE MANUFACTURER’S NAME AND/OR IDENTIFICATION AND GAUGE, WITHOUT WHICH WE WILL RETURN.