AfricaRoc DHD 341 4” DTH Hammer with Foot Valve Request A Quote View Brochure Details Value Length (Without Bit) 1032mm Weight (Without Bit) 40.25Kg External Diameter Ø99mm Bit Shank DHD 340 Hole Range Ø110- Ø135 Connection Thread API 2 3/8″ Reg Working Pressure 1.0-2.5Mpa Recommended Rotation Speed 25-40r/min Advantages » High Performance in hard and soft formations» Spares and services locally available» Faster drilling speed and lower air consumption» Fewer internal parts» All parts heat treated