The Gunson Time strobe Xenon Timing Light Set with RPM is a high-quality diagnostic tool for vehicles, perfect for mechanics and car enthusiasts. Made in the United Kingdom by Gunson, this inductive timing light features a built-in RPM function for precise engine timing adjustments. The boxed set includes detailed instructions for easy use, making it a reliable tool for accurately setting timing on a variety of vehicles. Please study pics to form your own opinion. Thanks for looking.