Tekton 3/4 inch drive impact extensions allow you to extend your reach. Attach an extension to your drive tool to reach past obstructions or into tight spaces. This set includes 3/4 inch drive impact extensions in 3, 6, and 10 inch lengths. The ends of the extensions have a spring-loaded pin detent that locks into the through hole on a socket, offering a secure connection. The extensions work with through-hole, friction ring, and detent pin anvils. The ring groove supports use with retaining rings, the smooth walls support use with friction rings, and the through hole supports use with retaining pins. All of our 3/4 inch drive sockets, extensions, adapters, and reducers are made out of 4140 steel and have a corrosion-resistant manganese phosphate coating.