Bird Wattmeter / Load Kit. * Which Consists of: 4391M Meter Military / Ruggedized Version of 4391A. * Includes 8164-045 Dummy Load, 5C, 5D, 10D, 25C, 25D, 50C, 50D, 100C, 100D, and 10,000H Plug-In Elements. Availability: Usually ships the next business day. 74149