Natural PTFE FDA Compliant tube, reinforced with 304 stainless steel braid. Can be used for coolant lines, chemical transfer lines, hydraulics and compressed air/gases. Meets SAE 100R14A. 1 metre.Specifications:919-6: Nominal ID 5/16". Max OD .44. Max working pressure 2500psi.919-8: Nominal ID 13/32". Max OD .53. Max working pressure 2000psi.