High-alloy steel that is heat-treated. Full polish chrome finish offers anti-corrosion protection. Comes in a tough and durable storage and carry case. Features a 72 tooth count ratchet that allows 5-degree arc swings. Meets or exceeds ANSI specifications. Includes: 3/8" Drive Pear Head ratchet. Fifteen 1/4" Drive sockets. Fourteen 3/8" Drive sockets. 3/8" Drive Extension bar (3"). 3/8" Drive F to 1/4" Drive M adapter. 1/4" Drive Socket Driver handle. 1/4" Drive Specialty Bit holder.