The VTG Sears Engine Analyzer Model 161-2161 is a 12 Volt Ignition System diagnostic tool suitable for motorcycles, passenger vehicles, and heavy-duty/commercial vehicles. This analog display device comes with a user guide, wire probes, and clamps as accessories, making it a comprehensive tool for analyzing and troubleshooting ignition systems. With the manufacturer part number 28-2161, this engine analyzer is a reliable option for those looking to ensure optimal performance and efficiency in their vehicles.