1.Dia:3 1/2''--26'' hole reamer bit 2.Type:Milled tooth & TCI 3.IADC:116,517,537,617 4.ISO,SGS approved 5.hole reamer bit hole reamer bit1.Type:TCI & Milled tooth2.Available size:3.Available IADC code of rock bits Milled tooth:116,117,126,127,136,137,216,217. TCI:417,437,517,527,537,547,617,637,737.Products details shows in photos:4.IADC code modalityCertificate: ISO,SGS5.Package and shippment6. ...