... bit, high downhole speed and long working life 9 7/8" IADC537G is a regular types, we found ... Austrilia is about 30 days. To Japan is about 7 days, to East-south Asia is always less than ... Available sizes: 60mm,65mm,76mm,93mm,95mm,98mm(3 7/8”), 114mm,118mm(4 5/8”),120mm(4 ... 6 1/2”)190.5mm(7 1/2”),193.6mm(7 5/8”),200.0mm(7 7/8”)215.9mm(8 1 ... 4”)374.6mm(14 3/4”)381mm(15”),393.7m(15 1/2”),406.4mm(16”)444.5mm( ...