Kit includes: -- Vibro wrench. -- 7 metric (3/8” square drive) hex impact sockets (special internal lip focuses vibratory forces): 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm. -- Durable plastic blow-molded carry case. For use with an air hammer mounted with a pressure regulator (NOT included). Safety and use instructions included.