... box or as your requirements Model 6-17 1/2(inch)Type tricone bits,steel tooth bits, PDC bitsApplicable water well ... , clays, salts and soft li mestones. Size and IADC available: 3 3/4" to 26" IADC 415,435,445,417,437,517 ... ,118mm,120mm,127mm(5”)130.1mm(5 1/8”),133.3mm(5 1/4”),139.7mm(5 1/2”),142.8mm(5 5/8”),149.2mm ... ”),250.8(9 7/8”)269.8(10 5/8”),295.3(11 5/8”)311.1(12 1/4”),346.0 (13 ...