This high-quality Twelve Point Cap Screw is designed to fit Cummins Engine models KTA19, KTA38, KTA50, and NT855. It is manufactured in China and comes as a single unit. This screw is a vital component of the engine's mechanism and is designed to ensure optimal performance. We recommend this product to anyone who is looking for a reliable and durable replacement for their Cummins Engine. It is perfect for those who need to replace an old or faulty screw. With this product, you can rest assured that your engine will run smoothly and efficiently.