3 Matamaru Giboshi F terminal only - no sleeve one / F3YG It fits M terminal round Giboshiosu terminal - with male sleeve gold / MG is. Only M terminal without sleeve round Giboshi golden male terminal only - no male sleeve / MG-sr is. It should be noted that the sleeve of this 3 Matamaru Giboshi F terminal is we do not sell. In the motorcycle and car of genuine products, but Yes welded through the transparent tube Since the equipment and machinery of welding can not be available, sales of the tube has been postponed. Regarding the insulation, it is proposed that or not sure you want to do is wound around the wiring tape or vinyl tape.