Test Tube Rack 18-Hole Holder w/ Drainage – Fits Tubes up to 11mm – USA

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

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

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

8 Hole 3 Layers Test Tube Holder Stainless Steel for 26-30mm Tube Labs Rack

1*Aluminum Test Tube Holder Rack 40 Hole 3 Layer For 18.5-22.5mm Tubes## UK

Plastic Test Tube Rack for 15/18 mm Tubes, Hole Diameter is 18.7mm, Holds 50,...

3 Pack Plastic Test Tube Rack, 50 Holes Lab Rack Holder for 18mm Tubes, Detac...