... .adequate stocks,fast delivery 5.IADC 517 8 1/2" IADC 517 Kingdream hard rock ... (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 ... 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 ... (9 5/8”),250.8(9 7/8”)269.8(10 5/8”),295.3(11 5/8”)311.1( ...