Tubing Details - Black vinyl tubing, 3/4 inch (19.1mm) inner diameter, 1 inch outer diameter, wall thickness 1/8 in, 50 feet length. Working temperature: 23 F to 149 F (-5 C to 65 C), Hardness: 73A (firm), Max working Pressure: 30PSI. Can be used for low pressure applications. Great flexibility and No kink - PVC tubing is made of high quliaty PVC material, non-toxic, lightweight, great flexibility, smooth interior and exterior for easy flow and flushing, Its walls are thick enough to prevent kinks. Easy to use and storage - The black tubing is wear-resistant, resistant to aging, and resistant to acid and alkali chemicals. It can withstand rough handling and repeated use, easy to shape, bend and install, and can be easily cut with any cutting tool for your need length.