12-10 gauge 0.250" width, 0.032" tab, female nylon-insulated rolled edge quick-disconnect terminals. Also known as slip-on or fast-on connectors, these quick-disconnect terminals offer the fastest way to connect and disconnect two wires. They are also reusable. Simply slide the male terminal into the female terminal. The terminal has a rolled edge connection that acts as a spring, applying a better grip on the male terminal for superior connection reliability. Works with regular, similar width male terminals. The nylon insulation provides relief from vibration that can cause the wire to fail prematurely. The nylon insulation also prevents incidental metal to metal contact that can cause shorts. Requires two crimps (terminal to wire strands, terminal to insulation of wire). Standard tools perform both crimps. For heavier usage, use a tool that performs both crimps at the same time.