Name:tubing couplings Std Ref:API 5CT Grade:J55,K55,N80,L80,C90,P110, N80-1,N80-Q Type: NU, EU Coupling Manufacturer ... -7/8"EUE93.17*130.352.43-1/2"NUE107.95*142.883.173-1/2"EUE114.30*146.054.14"NUE120 ... "NUE132.08*155.584.894-1/2"EUE141.30*158.756.051.Grade:J55, K55, N80-1, N80-Q, L80, C90, P110 2 ... 's request 3.Size: tubing coupling from 1.9" to 4-1/2",Casing coupling fro4-1/2"to 13-3/8" 4 ...