Key features

• •EXCELLENT ORGANIZER - This plastic test tube rack is great to store and organize ink samples, which come in 5 ml sample vials that are 16 mm in diameter. They fit perfectly in this rack, so they don't fall over or make a mess. Easy to make removable labels with scratch paper and scotch tape to avoid confusion.
• •STURDY MATERIAL - Made of high-quality plastic, it has suitable flexibility and toughness. Don't worry about it being easy to crack or too hard and jam the test tube. It is lightweight and flexible, and this test tube rack holder is very convenient to use.
• •3 LAYERS & 50 HOLES - You will get 6pcs plastic test tubes holder. The 3 layer design helps to more effectively hold the test tubes to keep them standing and stable. Each 16mm test tube holder can hold 50 test tubes with a diameter of 13-16mm.
• •SIMPLE MANUAL ASSEMBLY - The white brackets on both sides are designed with easy-to-slide slotting directions. Just align the 3-layer 16 mm test tube rack and snap them in place. Note that the rack with the smallest hole (10mm diameter) should be installed at the bottom.
• •HASSLE-FREE PURCHASE - We provide all customers with higher quality products and a satisfactory shopping experience. Let us know if you find any quality issues after receiving the plastic test tubes holder. We guarantee to offer a 30-day refund.