GTO52-K 9-Roll Soft Ink Roller Kit for Heidelberg GTO 52. Kit includes: 1 ea. 52H10-Y yellow form roller; 1 ea. 52H10-B blue form roller; 1 ea. 52H10-W white form roller; 1 ea. 52H10-R red form roller; 4 ea. 52H10-B blue distributor roller; 1 ea 52H10-B blue ink ductor roller.