G.D.India Pvt. Ltd. Supplies J-Hooks Material Handling Systems. G.D.India Pvt. Ltd. Manufactures a range of Auto Body Spot Weld Pneumo Hydraulic Jigs and Fixtures, Material handling Equipments and Special Equipments. The J-Hooks Material Handling Systems are engine assembly equipment used to carry the engine from one assembly station to another. The movement of the j-hook is on an overhead monorail. J-Hooks can be designed to take up a load of up to one tonne.