Plastic Test Tube Rack

Material:PP
Specifications:
1)HJ-TR13
Diameter:13mm x 90 holes
2)HJ-TR16
Diameter:16mm x 60 holes
3)HJ-TR20
Diameter:20mm x 40 holes
4)HJ-TR25
Diameter:25mm x 24 holes
5)HJ-TR30
Diameter:30mm x 21 holes
Color:white,blue,yellow,red,green can be choosen