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Model: FM2821/FM3821/FMF3821/FMH3821/FMR3821
IADC Code: M442
Size Range (in): 5 7/8, 6, 6 1/8, 6 1/2, 7 7/8
Recommended WOB (lb/in. Diameter): 500-2500
Recommended Rotary Speed (RPM): 60-450
Special Features/Usage: MVW