Feature●To be used with 90° sweep gauges●Will work with Stewart Warner gauges with 0 to 100 psi range●Designed to make sure that you get fast, accurate information from your Stewart Warner gauges●Comes with 1/8” npt and an adapter for 1-4” npt to work with most applications including the vintage engines and even the flathead V8’s.Description Designed to make sure that you get fast, accurate information from your Stewart Warner gauges. 1/8-27 NPT. Electrical. Designed to be used with 90° sweep gauges.