Description Lightweight Poly Tubing for supply lines for liquid detergent, acid and sanitizer 1/4 inch O.D. x 100 foot roll .25 outside diameter .170 inside diameter rigid wall Used on some automatic pipeline washers Low-Density Polyethylene Tubing 100% non-toxic, FDA compliant ingredients. ideal for food and beverage applications not requiring NSF certification. Chemically Inert Impermeable to Both Gas or Liquids Excellent Dielectric Properties Made in USA 2/23