30PCS 5x5x5mm Triangle Optical Glass Prism w/ Defective for Decoration Teaching

Description

30PCS Defective Right angle triangular prism for Physics science Teaching
Color: as pictures
Quantity: 30PCS
Can't use on Projector.
Can be use as a Decoration or to Research
Delivery details
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On 04-Sep-20 at 06:29:09 EDT, seller added the following information: