Features & Benefits: . Fine tooth 5 ratchet handle. "Pass through" socket system eliminates the need for deep sockets. The Gear Ratchet handle quickly converts to a conventional 1/4" or 3/8" ratchet for standard sockets by using the two included adapters. Set Includes: . Gear ratchet handle. (7) SAE Vortex sockets (3/8", 7/16", 1/2", 9/16", 5/8", 11/16" and 3/4"). (10) Metric Vortex sockets (10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm and 19mm). 1/4" dr. Gear Ratchet adapter. 3/8" dr. Gear Ratchet adapter. Vortex "Pass-thru 3" extension (Designed to reach into deep recesses making deep sockets obsolete). The Vortex thin wall socket design has the same torque strength as an ordinary socket. Over all height is reduced by as much as 50%, width by 20%. The unique gear ratchet drive configuration increases torque strength by as much as 40% and needs as little as 5 or arc. Chrome vanadium steel. Fully hardened.