... are 4 kinds of subs,Website:http://www.fypedrilling.com, Cable Head, Top Subs, Tandems, Bottom Subs and Crossovers under normal ... ×3.55489891883 1 /16-ACME,M80×3,Tr80×4,Tr78×468.6×5.7,57.9×3.555102102127Tr90×4,Tr65×478 ... 1 /16-ACME,M80×3,Tr80×4,Tr78×4,Tr65×468.6×5.7,57.9×3.5514102102178Tr90×4,Tr65×478 ...