Test Tubing Rack Holder 11mm Dia School Supply Lab Equipment Plastic 24 Holes 1.5ml Clear Centrifugal Test Tube
https://www.vogueparade.com/shopping/EN/100003135/1/1005001713004084/test-tubing-rack-holder-11mm-dia-school-supply-lab-equipment-plastic-24-holes-15ml-clear-centrifugal-test-tube//