Test Tube Rack 3 Layers Stainless Steel 16-17mm Diameter Holder Stand 50 Holes

13.5-30mm Diam x 12-120 Holes Stainless Test Tube Rack Holder Science Lab Stroge

Various Holes Count Stainless Steel Test Tube Z-Rack Holder Storage Lab Stand

Professional Grade Test Tube Holder 40 Hole Rack for 18 5 22 5mm Tubes

Stainless Steel Test Tube Holder Rack 40 Hole 3 Layers for 14-16mm Tubes

Stainless Steel Test Tube Holder 30 Hole Rack Up To 18mm

Stainless Steel Test Tube Holder Rack 25 Holes 3 Layer for 16-17mm Tubes

Lot of 21 - Metal Test Tube Rack Holder Science Lab Storage w/ 1/2" and 1" Holes