Product: 1.Rock drill/Jack Hammer, including pneumatic, gasoline powered and electrical portable types, widely used in mining, construction work, quarrying, tunneling, etc. The 27kg gasoline type can drill 6m down into rock at speed of 250mm/min and also be turned into a versatile tool as hammer, rammer, etc; the electrical type can drill 25meters. 2.Drill bits, rods and drill accessories for rock drills, like chisel, shovel, moil point, hammer, etc, also be used with pneumatic rock drills or jack..., China Computer Use Tool Manufacturers ...
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