Cleans 4, 5, 6 and 7 spade trailer terminals. For Male and Female Connections. Maintain continuity and prevent circuit failure. Quickly and precisely cut away corrosion. Great for use on many standard bullet and butt connectors Featuring 4 double sided tools for cleaning 4, 5, 6 and 7-way spade pin trailer sockets (male and female), this product can also be used to clean standard butt connectors, trailer and automotive tail light connectors and more. Innovative design incorporates cutting edges and files to last over a lifetime of use. The first ever set of cleaners for 4, 5, 6 and 7-way spade pin terminals, for removing corrosion, resizing female terminals and improving connections for tailoring.