PRD Hand Pump Drill
Capacity: 4.1/2" to 6.1/2" dia. bore hole upto 150mtrs. by DTH and 6" to 8.1/2 dia. upto 150 mtrs. by rotary in steps For more details about this Drilling Rig Contact
http://www.dthrotarydrilling.com/PARANTHAMAN-EXPORTERS/Rig-Hand-Pump-Boring.html