This toggle switch is designed to fit Cummins Engine K19 K38 NT855 QSK models. It is a high-quality electrical equipment that is perfect for business and industrial use. The switch is made with durable materials that ensure long-lasting performance and reliability. It is easy to install and operate, making it a great choice for anyone who wants to upgrade their electrical equipment. Whether you're looking to replace an old switch or you want to add a new feature to your machinery, this toggle switch is a great choice. Contact us today to learn more about this product and how it can benefit your business.