Descriptions:10.5mm/8.5mm hole diameter, 96 holes, double panel(well on both sides).Made of polypropylene, high temperature resistant, strong impact-resistance for long term use.Alphabet and number index for easily tracking the samples.Can withstand temperature range: -30℃(-22℉) to 140℃(284℉)Used for hold tubes in the laboratory, also can be used in the home, classroom, and other places.Specifications:Color: BlueMaterial: Polypropylene(PP)Hole Quantity: 96Hole Diameter:10.5mm / 0.41", 8.5mm / 0.33"Fit for: 0.5ml/1.5ml/2ml TubeTotal Size: 205 x 110 x 25mm / 8.07" x 4.33" x 0.98"(L*W*H)Package Content: 1 x Tube Rack.