Spark plug wrench set from BILITOOLS. Includes a 10-45 lb-ft preset torque wrench, 14mm and 16mm magnetic swivel bits, 9/16" - 5/8" - 18mm - 3/4" - 13/16" bits and a 10" extension. The 90-tooth wrench head rotates only 4 degrees for increased accuracy. When the set torque is reached, a click sounds to alert you when tightening is complete. The bits are made of chrome vanadium steel, resistant to high temperatures, corrosion and dirt. The ground surface does not damage the edges of the nuts. Different types of nozzles allow easy access to plugs in modern engines, chamfered edges prevent slipping. Conveniently stored in a special box with size markings on the nozzles. This is a professional spark plug replacement kit. Provides accuracy, convenience and safety when servicing your vehicle.