Complete 121-Piece Mechanic Kit includes 3/8"" drive ratchet handle, 32 sockets (1/4"" and 3/8"" drive), 12 combination wrenches, 22 hex keys, and 40 bits. Covers Sae (Inch) and Metric (mm) sizes. Features 6-point sockets (5/32"" to 5/8"" and 4mm to 15mm) for high torque, 5/8"" Spark Plug socket, adapter and extension bar. Includes 1/4"" bit driver with 40 bits: Phillips (#0-#3), Slotted, Square (S1-S3), Star (T10-T40). 22-piece Hex Key set (0.05-1/4"" and 1.27-6mm). Tools forged from heat-treated alloy steel with chrome polish. Reversible ratchet with quick-release mechanism. Combination wrenches with open and box ends. All 121 pieces in blow-molded case with size labels. Weight: 5.59 pounds.