Tube Rack, 50 x 12mm

Standard White 2" Cardboard Box Assembled with Dividers, 49 Cell - 5 1/4" × 5 1/4" × 2"

Tube Rack, 15 x 50ml (29mm)

Standard White 4 3/4" Cardboard Box with Drain Hole Assembled with Dividers, 16 Cell - 5 3/4" × 5 3/