Diagnostic Cable with Alligator Clips and Interface Box

This item appears to be a specialized diagnostic cable or extension lead, likely for automotive or powersports applications, given the provided context of 'big twins' and 'bearing race tool'. It consists of a black electrical cable, coiled and approximately 6 to 8 feet in length (estimated from the image). One end terminates in a pair of alligator clips; one with a red insulating handle, the other with a black insulating handle, indicating positive and negative terminals respectively. These clips are made of a metallic alloy, possibly chrome-plated steel. The red clip shows some slight wear and scuffing on its handle. The other end of the cable leads into a black, rectangular plastic housing, measuring roughly 4-6 inches in length. This housing appears to contain internal circuitry, typical for interfaces or diagnostic devices. Exiting this housing, or perhaps integrated into the cable before it, is a black, multi-pin electrical connector, likely a proprietary diagnostic plug. The connector has a ribbed, cylindrical base for grip and possibly strain relief. The overall construction suggests a robust design suitable for a workshop environment. The cable itself shows no obvious kinks or severe damage, but some dust and minor surface grime are visible, consistent with use in a garage or similar setting. There are no discernible manufacturer markings or specific model numbers visible in the image. Its design suggests a purpose of either supplying power to a diagnostic device or acting as an interface between a vehicle's electrical system and a diagnostic scanner.