This MSD Timing Pro is constructed with solid state circuitry and uses a Silicon Controlled Rectifier (SCR) that provides accurate and stable timing signals from 0 to 8, 000 rpm. This rugged timing light is built to work in rough environments such as racing pits or professional mechanic shops. The MSD Timing Light's lightweight assembly is injection molded for great durability and produces an intense strobe that is easy to view even in daylight. The inductive pickup is detachable for easy storage and for safety measures while the battery clamps provide a strong grip to the terminals. The battery clamps are color-coded and insulated for tight, safe connections.Pit Stop USA offers MSD Timing Pro Timing Light 8992 at low everyday prices. Be sure to check out all of our products from MSD including MSD Ignition Timing Lights and MSD Timing Light and MSD Timing Lights.