• Extra-long 18” 100-tooth ratchet for 1/2″ drive Astro Nano style impact sockets with 22mm outside hex • Designed to access and retain Nano style impact sockets from Astro as well as a growing number of brands replicating this design • Maintains a low-profile working height of just 1.10″ with sockets installed • Maximized peak torque durability to match larger and larger 1/2″ drive socket sizes