58mm extra-strong ECS drive shaft for 2mm pin made from world-renowned HUDY Spring Steelââ?. This race-quality drive shaft is a supplementary component for #305360 ECS ES (additional Strong) Drive Shaft 58mm - HUDY Spring Steelââ? - Set. along with the ECS drive shafts, wheel vibration and noise are paid off to your absolute minimum, steering is increased, and cornering rate and smoothness are quite somewhat increased.