Bel-Art F18867-0001 Water Bath Rack; 25-30mm, 15 Places, Polypropylene Steam autoclavable at 121 degree C (250 degree F) Molded of a special blend of polypropylene that is heavier than water, these racks sink to the bottom of the bath and will not tip over Height top deck: 2-3/4" Rows: 3 x 5 Tube size: 27mm-30mm