Timing Light Xenon Inductive with 0 to 60 Degree Dial Advance Ignition Spark Checker 60 advance dial makes it easier to read and adjust timing advance Trigger activated, Clamp-on inductive pickup, 4 ft. detachable leads High Impact Bright ABS housing, Bright xenon bulb Set timing advance without a degree scale on your engine. Brilliant Xenon Flash works at all RPMS, Works with all 12 -16 Volt systems