Powered by clock type springs and rotating on sealed for life bearings. ELEKTROMAG drum offer a convenient, cost effective means of supplying power to moving machinery. With heavy duty, one piece drum halves and a painted finish the reels are suitable for operation in arduous conditions. ELEKTROMAG springs have been proved in service for many year and are manufactured from the highest quality materials. They are of the clock spring or spiral wound type and by using the springs singly or assembled in series or in parallel, a wide range of performance characteristics is obtained from the standard range.