Product Review

WARNING: MADE BY GLASS, HANDLE WITH CARE.

Specifications:
Brand: DjuiinoStar
Model: DSTB-1003
Focal length: -30cm
Diameter: 3.07±0.05inch (polished by hand)
Thickness at edge: 0.55±0.05inch
Net Weight: about 0.38lb
Material: Glass

Packing List:
Spinning Top Base x1

We also have 4" base double concaves with -30cm&-50cm focal lengths. If you would like to have a bigger one, you may have a look.