SIZE : 12-1/4 inch
Diamter : 311.1mm
Primiary Cutter Size: 16mm
Second main cutter size : 13mm
Blades : 7 Blades wit double cutter row
Gauge protection :Non
Nozzles Size : 16
Nozzels No :9
Optional Feature : Back reaming
Double cutter row
Appliaction : Drilling Industrial ,
oil drilling ,minng drilling ,water drilling ,
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