Mini Stand For 5-15 ml Centrifuge/Test Tubes Small, space-saving design.Size: 4″ x 2″ x 1 3/4″ (100 mm x 50 mm x 45 mm).Made of PLA plastics. Not autoclavable.8x 18mm holes fit 5-15 ml tubes with diameters of 18 mm or less.Also fits syringes with diameters of 18 mm or less.Multiple use, easy to carry around or bury in ice.Space saving storage for small number of tubes.Tubes are not included.Color may be different from shown. If choose random color, we’ll ship assorted random color.