The 2208.0, type H4.00/10, is an industry-standard insulated ferrule used to ensure reliable electrical connections. It is specifically designed for a 12 AWG (4.00 mm²) conductor and requires a wire stripping length of 10.0 mm. This gray ferrule has an overall length of 17.0 mm, an inner diameter of 3.2 mm, and an insulated sleeve outer diameter of 5.4 mm. Using this ferrule prevents conductor breakage due to bending or vibration and facilitates easier wire insertion into terminal blocks, circuit breakers, and other control devices.