Web Printing Controls ST4504 Rev C board CCR. Used, tested, pulled off running press. Please contact for any other equipment or parts needed for Harris, Heidelberg, or Goss web printing presses. We also have boards and parts for auxiliary equipment including GMI, WPC, Butler, Quad Tech, Scheffer, WPM, and more. If we do not have the part in stock we can usually make it since we have most all of the Harris drawings on hand.