Each spacer is made of a round bar of 20 mm diameter aluminum.
An internal thread diameter of 6 mm provides a mounting threaded rod steel and a washer made of aluminum with 6 mm thick countersunk screw which receives its axis FHC steel. Two neoprene washers avoid front and back glass contact to the aluminum.
The entire kit is treated by blasting and anodizing natural.
The volume of tempered glass 8mm thick will have its polished edges and edges slightly slaughtered.