Polyurethane Clear Tubing, 1/2" ID x 5/8" OD x 1/16" W, Working Pressure: 36 PSI 100' Length transparent, flexible tubing for fluid or compressed air applications Polyurethane for resistance to oil, chemicals, and abrasion Ether-based compound for resistance to water Operating temperature range of -60 to +220 degrees F Operating pressure of 36 psi