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size diameter 42mm clear transparent N-Bk7 optical window glass
Specifications:
- warmming: before pay pls contact with me
- thickness: 0.3-50mm
- tempered: depend your choice
- surface: 40/20
- surface: no bubbles and hairlines
- Size: 42mm
- shape: round
- polishing: both two sides
- Origin: CN(Origin)
- Material: optical glass BK7
- material: bk7
- color: clear
- Use: optical instruments
- Model Number: B270
- edge: protection chamfer
- Free shipping
We offer free shipping for all products
- 100 days returns
If you aren't satisfied, you can return within 100 days
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