2pcs/lot Diameter 21mm Wooden Test Tube Rack Holes Glass or Plastic Test Tube Stand for Laboratory Equipment for Kids
All holes of each size are 21 mm.
2 pieces means 2 pieces/pack
Specification:
6 holes: length 250 mm, width 63 mm, height 85 mm
8 holes: length 300 mm, width 650 mm, height 850 mm
10 holes: length 360 mm, width 650 mm, height 850 mm
12 holes: length 410 mm, width 650 mm, height 850 mm