... Carbon steel, high quality tool steel or Stainless steel3-way or 4-way measuringHave Basic model, with fine adjustment, with auto ... , welding gage, large LCD left hand use, 3-key,4-key type, ABS key type, hold key type, mode ... & setOutside micrometers type A, B or COutside micrometers with extension anvil collarsDigital outside micrometers & setInch & metric digital outside micrometersInterchangeable ...