Square Keys:- Square Keys are generally used for Automobiles, gearboxes, starters, alternators, fuel injection pumps, oil pumps, water pumps and brake compressors, Two wheelers, Electric motors, alternators and switch gears, Machine tools and all types of pumps Textile machineries,Pharmasitical Machinery, Heavy Duty Machinery, Earthmoving Machinery, Automotive Cran etc.