Profile: Lee Spring Ltd specializes in providing round wire compression, die, extension, torsion springs and disc springs. We also offer conical springs, swivel hook springs and drawbar springs. Our new Lite™ pressure range has been designed to meet demands for compression springs combining low spring rates with larger diameters. These high index springs deliver 7 to 35kPa pressure at 80 percent deflection. It is used in valves, pistons, syringes, motor brushes, dispensers, contacts and toys. Extension springs can absorb and store energy by offering resistance to a pulling force.