The 3M Scotchlok TR-490 Ratchet Crimping Tool provides a reliable and consistent crimp for a wide range of terminals and connectors. Its ratchet mechanism ensures full closure for a complete crimping cycle, while the field calibration feature allows for easy adjustments. Constructed with hardened steel jaws and handles with a corrosion-resistant finish, this tool is built for durability and longevity. It is UL Listed and CSACertified, making it suitable for various industrial applications.