MAST Box frame using high strength steel (Tensile 760MPa, Yield 700MPa) - Welding condition AWS D1-1 - V-Profi le power head sliding mechanism - Dual leaf chain with safety wire rope or telescopic cylinder type - Double Clamp(HI-ROKTM) equipped on Mast for angle drilling job Equipped with 3,000lb winch POWER HEAD - Two Speed Power Head - Strong and compact helical gears - Separate Water Swivel easy maintenance - Separate Float Cushion Sub - Lubrication/Cooling System with Washable - Lubrication Strainer - Max Torque/Speed 3500psi [345bar] or 40GPM [151LPM] - Eaton VIS series Two Speed Motor, 325cc/rev