The Astro Pneumatic 78005 Goliath torque saver impact extension bar set is designed to support controlled reach and durability when using impact tools. This four piece set features 3 8 drive extensions in multiple lengths to help access fasteners in a variety of working conditions. The torque saver design helps manage energy transfer during impact use supporting reduced stress on sockets and fasteners. Built for impact applications these extensions offer dependable performance for automotive and industrial service tasks.