1. Extension Rod (1) Threaded Connection:R32,R38,T38,T45,T51,and so on (2) Diameter:OD32,OD38,HEX32,HEX35,And so on. (3) Length:800-6000MM (4) Package:wood case or wrapped with plastic knitting and then packed into bundles. 2. MF-Rod (1) Threaded Connection:R32,R38,T38,T45,T51,and so on (2) Diameter:OD32,OD38,HEX32,HEX35,And so on. (3) Length:800-6000MM (4) Package:wood case or wrapped with plastic knitting and then packed into bundles.