Designed to meet the most demanding applications, the SCB sets new standards in electrical performance as well as durability. The large diameter, high efficiency coil is computer designed to the optimum length to diameter ratio. This results in a coil capable of easily covering 120 channels at 1000 watt power levels. The lower half of the SCB is constructed from 3/8 inch diameter, solid stainless steel rod which is virtually indestructible. A stainless steel spring is mounted on he top of the coil where shock absorption is most effective. 46 inches tall.