B7) This genuine Makita armature assembly, part number 518649-7, is the perfect replacement for your JR3070CT model electric power tool. Designed for use with 110V power, this high-quality armature assembly is sure to provide reliable performance for all your power tool needs. Constructed by the trusted brand Makita, this armature assembly is specifically designed to fit your JR3070CT model tool, ensuring a perfect fit and optimal performance. Don't settle for less than the best when it comes to your power tool needs - choose Makita for quality you can rely on.