sourcing map Stainless Steel Test Tube Holder Rack 10 Holes 3 Layers for 26-30 mm Pipes Package contents: 1 x tube holder. Made of stainless steel, durable and lightweight, easy to carry. Highly polished surface, no sharp edges and objects, resistant to chemicals and corrosion. Lab Equipment Test Tube Stand Uxcell Stainless Steel Test Tube Holder Rack 6 Hole 3 Layer Home Science Experiment Rack Fit for 26 to 30mm test tubes, round holes, hold 6 tubes. Economical and space-saving rack for applications in lab or at home. 3 Layer, 2 slots, each layer has... Highly polished surface, no edges or sharp, chemical and corrosion resistant. Features: Made of stainless steel, durable and lightweight, easy to carry. Metal Test Tube Rack 6 Holes 1.18in Strong 3 Tiers Stainless Steel Centrifuge Tube Holder For Laboratory School Economical, space-saving rack for laboratory or home applications.