oil wellhead assembled of tree cap and gauge bull plug,threaded nipple NB:2-9/16" to ... wellhead oil wellhead assembled of gauge bull plug, tree cap,threaded nipple,top connetctor,valves,cross and spoolNB:2-9/16 ... head, casing spool,tubing spool,tubing head adapter,studded cross, threaded flanges,adapter spool,gate valve,choke valve and ... plug,tree cap,cap flange,top connector, valves,cross and spool