Length    (Less bit)	Weight  (Less bit)	External diameter	Bit Shank	Hole Range		Connection Thread
1070mm	40.00kg	Φ99mm	QL40	Φ110-Φ135		API2 3/8”Reg
Working Pressure	Impact rate at 1.7Mpa	Recommended rotation speed		Air consumption
				1.0Mpa	1.8Mpa		2.4Mpa
1.0-2.5Mpa	30HZ	25-40r/min		5m³/min	9m³/min		14m³/min

Item Description	Weight (kg)	Part Number
1. Top Sub 2. “O” Ring of Top Sub 3. Check Valve 4. Spring 5. Air Distributor 6. Internal Cylinder 7. Piston 8. External Cylinder 9. Guided Sleeve 10. “o” Ring of Stop Ring 11. Stop Ring 12. Drive Chuck 13. Drill Bit	6.50 0.01 0.35 0.05 1.50 2.10 8.50 15.20 1.80 0.005 0.20 3.20 9.00	NQL4A01 NQL4A02 NQL4A03 NQL4A04 NQL4A05 NQL4A06 NQL4A07 NQL4A08 NQL4A09 NQL4A10 NQL4A11 NQL4A12 NQL4A13