API 5CT Oil Tubing, Grade J55,K55,L80,N80,C90,C95,T95,P110. Type of End-Finish: Plain, NU, EU API 5CT Oil Tubing Grade: J55, K55, L80, N80, C90, C95, T95, P110 OD: from 2 3/8" - 4 1/2" (60.3-114.3mm) Wall Thickness: 0167" - 0.63" (4.24 - 16mm)Type of End-Finish: Plain, NU, EU