Material: NBR (75) Coating: None Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image. Cross Section Diameter (in): 0.22 Inside Diameter (in): 2.54 Material Description: NBR is a versatile material with good abrasion and cut resistance. It works well in Air, Engine Oil, Diesel Fuel, Coolant/Urea, Hydraulic Oil and Automatic Transmission Fluid applications. Do not use with Biodiesel.