Tricone bit, cone bit, steel tooth bit Fast drilling speed. Open bearing Reliable quality and reasonable price. We would like to konw ur detailed specification, pls feel free to contact us!60mm, 65mm, 76mm, 93mm, 95mm, 98mm (3 7/8” ), 101.6mm, 114mm, 118mm, 120mm, 127mm(5” )130.1mm(5 1/8” ), 133.3mm (5 1/4” ), 139.7mm(5 1/2” ), 142.8mm (5 5/8” ), 149.2mm (5 7/8” )152.4mm (6” ), 155.5mm(6 1/8” ), 158.7mm(6 1/4” ), 161.9mm(6 3/8” ), 165.1mm (6 1/2” )190.5mm (7 1/2” ), 193.6mm (7 5/8” ), 200.0mm (7 7/8” )212.7mm(8 3/8” ), 215.9mm (8 1/2” ), 222.2mm(8 3/4” )241.3(9 1/2” ), 244.4(9 5/8” ), 250.8(9 7/8” )269.8(10 5/8” ), 295.3(11 5/8” )311.1(12 1/4” ), 346.0 (13 5/8” ), 349.2(13 3/4” )374.6(14 3/4” )381(15” ), 393.7(15 1/2” ), 406.4(16” )444.5(17 1/2” ), 508(20” ), 558(22” ), 609.6(24” )660.4(26” ) Available models: Steel tooth 111, 121, 131117, 124, 126, 127, 136, 137211, 311216, 217, 227 TCI 415, 435, 417, 437515, 525, 535, 545, 517, 527, 537, 547615, 625, 635, , 617, 627, 637, 737
