CHECKIT TEST PROBES is a small father/son manufacturing business. We design and manufacture automotive electrical terminal test probes. Our test probe kits offer technicians an affordable alternative to the expensive OEM and Aftermarket kits. Our probes are MADE IN THE USA using imported and domestic OEM terminals. All of our test probes are clearly marked with the terminal size in millimeters or inches as indicated by OEM manufacturers. This allows technicians a greater selection when testing component and wiring harness connectors they may not be familiar with. We have researched many OEM and Aftermarket kits to find that they are listed with either (Large, Medium, or Small), No size markings, or they use coding only listed in OEM service information. This takes the guesswork out of selecting a terminal that will reduce damage caused by using an incorrect size terminal of component and/or wiring harness terminals. We are currently marketing three (3) alternative kits similar to the following: J-35616-F EL-35616-300-1 NUD105-R045F We are introducing a probe kit that is used for testing terminal pin tension (drag test) ranging in size from a 0.40mm to 6.3x0.80mm. These meet all terminal sizes as indicated by SAE, ISO, and USCAR. We stand behind our product with a 100% replacement warranty including shipping and handling.