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20mm Rainbow Prism Optical Glass Multifaceted Bright Light Combine Physics Teaching Refracted Light Spectrum Children
Specifications:
- Surface: 40/20
- Size: 20MM
- Shape: Irregular Shape
- Origin: CN(Origin)
- Model Number: Rainbow Prism Seven Piece Set
- Material: Optical glass H-K9L
- Flatness: 632.8nm
- Dimension Tolerance: 0.01MM
- Certification: CE
- Angle Tolerance: 15seconds
- Free shipping
- 100 days returns
- Low prices
- 5 million products