With this heavy duty tool you can easily terminate universal style spark wires and have professional secure connections time after time. An adjustable ratchet mechanism prevents over or under pressure crimps. Tool features three quick change jaw sets. One for 7/9mm spark plug wires, one for six different sizes of wire connectors with plastic insulation and one for six different sizes of non insulated wire connectors. Measures 9inches long and has insulated grips. Manufacturer