Drivers grab is a kind of can replace human under various conditions of scrap steel, pig iron, ore, waste is irregular and bulk material handling tools effectively.Grab using external or the excavator's hydraulic system, hydraulic system opening and closing of the grab bucket.Grab can work in various harsh environment, the distribution fitting adopt international famous brand, unique jaw valve curve especially for scrap steel, pig iron, irregular materials such as loading and unloading.Grab four or six jaw valve, each jaw valve driven by a cylinder, to ensure that the materials will not leak.