Kit includes replacement antenna and 6mm wrench. Also includes Allen wrench and operating guide. Easily replace your TEK E-Collar or GPS antenna. The SportDOG TEK Antenna Replacement Kit has everything you need to replace those absolutely essential antennas while you're out in the field or back at the lodge. This complete kit includes replacement antenna, 6mm wrench, allen wrench and instructions, and it's designed for use with any of SportDOGS's TEK E-Collar or GPS antennas.