This dipstick is designed for use with Cummins engines K19, K38, K50, N14, and NT855. It is an essential tool for accurately measuring the engine's performance and ensuring its optimal operation. The dipstick is made by a trusted brand and is of high quality, ensuring reliable and long-lasting performance. This unit comes with one dipstick and is manufactured in China. It is a great addition to any commercial truck owner's toolkit.