Pro Bigshot® NOS Solenoid;Easiest way to add power to any engine; Features .250" orifice providing maximum flow for extreme applications; Blue powder coated housing with a clear anodized aluminum base; Makes installation easier on multi-stage systems; Pressure balanced design reduces power draw; Requires only 4-6 amps during operaton; 1/4" NPT side inlet; 1/4" NPT bottom outlet; Cannot be use with a progressive controller;