... API&ISO Delivery iterm:Sea/Air De 5 1/8 Kingdream TCI Tricone tooth drill bit IADC537( ... 8"(45 mm)to 26"(660 mm)6,Moq:1 piece7,Bit body Color: can be as you like: matrix ... 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”),222.2mm8 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. ...