Disconnects the Fuel Module on 98 and Later GM Full Size Pickups, Suburban and Tahoe. The 2 piece design allows access to the connectors. Slide the proper size end into the connector. Then rotate and slide the other half in place. Now the module can be disconnected. Fits both 3/8" and 5/16" connector sizes. Will also fit all other 3/8" and 5/16" applications. The tool can be clipped together for convenient storage.