Specifications 1.Type:Oil Coupling 2.Grade: J55, K55, N80, L80, P110 3.Thread: EUE,NUE 4.Standard: API 5CT 5.Place of Origin: China OiL Coupling --------------------------------------------------------------------------------------------------- Specification API Tubing Coupling Size and Specification Descriptions and Size Type of Thread O.D*L(mm) Weight (kg) Tubing Coupling 2-3/8â?? NUE 73.02*107.95 1.28 2-3/8â?? EUE 77.80*123.82 1.55 2-7/8â?? NUE 88.90*130.18 2.34 2-7/8â?? EUE 93.17*130.35 2.4 3-1/2â?? NUE 107.95*142.88 3.17 3-1/2 EUE 114.30*146.05 4.10 4â?? NUE 120.65*146.05 4.35 4â?? EUE 127.00*152.40 4.82 4-1/2â?? NUE 132.08*155.58 4.89 4-1/2â?? EUE 141.30*158.75 6.05