Triangular prism optical glass rainbow seven-color Ships From:Inspire up lifting and five-pointed star

and five-pointed star

and easy to be cleaned

Please note the fully extended dimension is the required clearance you need from the point of grip to the inside of your hand

making it a hiking camping field survival

Triangular prism optical glass rainbow seven-color Ships From:Inspire up lifting and five-pointed starSpecifications: Model: Triangular Prism Size : 30x30x60 mm Prism Length: 60 mm Side Length: 30mm Material: Bk7(K9) optical glass, NOT plastic Weight: 100 g or so A spectrum is formed by a ray of light passing through a prism. The prism broke the light into all the colors of the rainbow. Attention: Gift box and retail box NOT included! Package Included: 1x triangular prism