6760 = Support for 13 tubes with 6 drying pins - Top rack has 7 (20mm) holes, with the bottom rack having 6 (25mm) holes (tubes sold seperately) 2455 = Support for 25 tubes with 12 drying pins - Top rack has 13 (20mm) holes with the bottom rack having 12 (25mm) holes (tubes sold seperately)
