Electro-Hydraulic Scrap Grapples Application: Hawco electro-hydraulic grapples are of an extremely rugged design to withstand the punishment of handling all grades of scrap iron. Advantages of the electro-hydraulic grapple are that it can be easily hooked up to a single hook type crane and that because its forces are generated hydraulically, it does not require the deadweight as does the cable driven grapples. Sizes: 1 to 20 cubic yards Standard Features: Easily maintained uni-directional hydraulic system. Commonly used, readily available hydraulic components. All alloy steel construction Pins and bushings made of heat treated 4140 and 4150 alloy stock All pins and bushings are lubricated through recessed grease fittings Tines are boxed and ribbed for greater strength. Replaceable manganese alloy tooth points.