... 3.IADC:417,517,537,617 4.reasonable price,excellent quality 5.ISO,SGS 9 1/2'' TCI Tricone Bit1.Type:TCI ... 2.Available size:3.Available IADC code of rock bits TCI:417 ... ,437,517,527,537,547,617,637,737.4.IADC code modality5.Package and shippmentCertificate:Products in details:6.Payment terms ...