The Dorman 800-141 Fuel Line Compression Union is a set of 3 steel unions designed for connecting 3/8 inch steel fuel lines. These unions are sourced from the USA and have a NPT thread type. With a painted exterior finish and compact dimensions of 5.9 x 2.8 x 1.6 inches, these compression unions are durable and efficient for various plumbing and improvement projects. The product has received a customer rating of 4.6 out of 5 stars, making it a reliable choice for home and garden maintenance tasks.