Materials of lens acceptable:    

Mineral glass/Plastic CR-39/Polycarbonate

Possible diameter of drilling:   

φ0.8mm~φ2.8mm

Enlarged hole size:              

φ1.5mm~φ2.5mm

Dimensions:                      

140(L)x185(W)x275(H)

Weight:                          

4.1kgs

Power supply:                    

AC  110V/60Hz    220V/50Hz