... size Type of TreadO.D*L(mm)Weight(kg)API 5 CT femaletubing coupling2-3/8"NUE73.02*107.951.282 ... .Type:NU,EU(tubing coupling),STC,LC,BTC(casing coupling)5.Surface treatment: whole phosphating, or inside phosphating and outside coating6 ... carton,wooden case ,wooden pallet or by customer requests API 5 CT female tubing