Deutsch terminal tools are a must have for electrical work. Buy the tool size you need. Sold in a convenient 3 pack. Deutsch Terminal tools are becoming very popular. Deutsch Terminal are found in most heavy duty applications Instead of cluttering your toolbox with unused sizes of Deutsch Tools, now you can buy just the sizes you need. Tools fit Deutsch HD10, HD20 and HD30 Series connectors plus Deutsch Jiffy Splices. Deutsch wire terminals have a special security collar that the connector tabs lock against. Tools are designed to slide over the wire in the rear of the connector to release the locking tabs. Deutsch terminals and connectors are found on Chrysler, GM, AGCO, John Deere, Case, Bobcat, Caterpillar, Harley Davidson, Mercury outboards, Kenworth, Peterbilt, White and other HD applications.