• Astro's master set of forged S2 tool steel 1/4" drive Nano impact bit sockets with 11mm outside hex
• Superior impact resistance for use with 1/4" impact wrenches and impact drivers
• Ultra low-profile use, drive from the outside flats or retained in Astro 78345 Nano ratchet wrench
• Ultimate solution for working in tight spaces
(California Prop 65)