Heathrow Scientific HEA120087 Coated Steel Universal Bottle Durable Tube Racks, 33 mm well, 2 x 6 Tube Array Rack suitable for Universal, McCartney and Scintillation vials and low prole tubes up to 33 mm dia Available in a 2 x 6 or a 5 x 10 format Mesh bottom support 33 mm well size Blue color