Craftsman 320-Piece Mechanic's Tool SetIncludes quick release ratchets in 1 4", 3 8" and 1 2" drives 152 sockets (6 point, 8 point and 12 point) in both inch and metric sizes 4 extension bars help extend your reach 8 combination wrenches let you slip in where the ratchet won't go Comes with a magnetic handle with 12 nut drivers in inch and metric sizes 96 screwdriver bits give you quick power and versatility Comes with 40 hex keys and 4 adapters Includes a 3 drawer case