... 1700mmTeeth: TCICutting Structure: Premium Tungsten CarbideBearing: Rubber O-Ring SealedApplication: HDD Horizontal Directional DrilllingCetificate: API & ISOFormation: Soft to Hard with Different ... , 114mm, 118mm, 120mm, 127mm(5" )130.1mm(5 1/8" ), 133.3mm (5 1/4" ), 139.7mm(5 1/2" ), 142 ...