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Model: HR-88
Manufacturer, Bit Name/Model Number: HR-88IADC Code: 817Size Range (in): 7-7/8", 8-3/8", 8-1/2", 8-3/4", 9-7/8"Recommended WOB (lb/in. Diameter): 3000-7000Recommended Rotary Speed (RPM): 90-50Special Features/Usage: GW..
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Model: HR-89
Manufacturer, Bit Name/Model Number: HR-89IADC Code: 817Size Range (in): 7-7/8", 8-3/8", 8-1/2", 8-3/4", 9-7/8"Recommended WOB (lb/in. Diameter): 3000-7000Recommended Rotary Speed (RPM): 90-50Special Features/Usage: GW..
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