The Performance W1173 40-Piece SAE and Metric Socket Set includes a wide variety of sockets for 1/4-inch and 3/8-inch drives organized in a storage case. Features: * 40-piece socket set includes ratchet, extension bar, 1/2-inch spinnner handle, spark plug socket, adapter and more * 1/4-inch drive and 3/8-inch drive socket sizes include - SAE sizes from 5/32-inch to 3/4-inch, metric sizes from 4mm to 17mm What"s In The Box: * Performance W1173 40-Piece SAE and Metric Socket Set