The Ace 1/4"-18 NPT Round Die is a high-quality pipe thread die made in the USA by Ace. This adjustable die can be used to create 1-1/2" threads with ease. Designed for precision and durability, this product is ideal for professionals in various industries who require accurate and consistent threaded pipes. Made in the United States, this die ensures a reliable and long-lasting performance for all your threading needs. Thanks for looking. I will combine shipping on multiple orders.