Manufactured to highest quality control standards. Resistant to effects of ozone and ultraviolet light. Inside diameter 1/4” (or 3/16”) ± 1/32” and 9/16” outside diameter ± 1/32”. Inside of the tubing is clean, smooth and free from dust, wax or any foreign material. Line call out specifications of ASTM D-2000 M2AA610F17EA14, z1 ASTM D1149 Mod. 100 hours. 100pphm ozone, z2 100% EPDM, z3 cured to eliminate tackiness, z 4 free from porosity, 10% deviation in tensile and elongation results referred to in D-2000 is recognized and permitted. Lengths of 100’ or 120’ packed 3 lengths per box. Sold in box quantities. In stock.