3M Scotchlok Hardened Steel Ratchet Tool is a positive action ratchet tool that crimps the barrel and insulation grip on insulated terminals and connectors at the same time. Hardened steel jaws and handles have a corrosion-resistant finish to offer enhanced durability. This tool has a terminal locator for proper insertion of the conductor.3M Scotchlok Hardened Steel Ratchet Tool effectively crimps nylon, vinyl-insulated, butted or brazed-seam terminals. It has cushioned grips and a spring-loaded locator to orient, position and hold the terminals in place. It features positive closure of the handles for a full crimping cycle.