Markeny Plastic Test Tube Rack 2 Pack Lab Test Tube Rack Holder for Test Tubes Detachable White 2Pack 40 Hole

Measures approx 250mm*105mm*70mm/9.84in*4.13in*2.76in(L*W*H) after the assembly Diameter of 40 holes rack: 21 mm/ 0.83 inch, can hold 40 pieces test tubes whose max diameter is 21mm or under. Diameter of 60 holes rack: 17 mm/ 0.67 inch, can hold 60 pieces test tubes whose max diameter is 17mm or under. Features: Easy to disassemble and install, convenient to carry. Durable and long service life, easy to clean. Economy and Utility: As there are vent holes on the bottom. This items is an economical and space saving rack. Package Include: 2 pack test tube racks, comes with unssembled Note that there are two sizes and choose the right size according to your needs