This Sears DC Power Timing Light, model 304.21171, is a must-have for any automotive enthusiast or professional mechanic. Its reliable performance and accurate timing make it a valuable tool for diagnosing and troubleshooting issues in your vehicle's timing system. With its durable construction and high-quality optics, this timing light is built to last and will provide you with years of reliable use. Whether you're a seasoned professional or just starting out, this Sears DC Power Timing Light is an essential addition to your toolkit.