This 2" x 2" (51 x 51 mm) 180 Degree Square Front Clamp attaches with two flat head Phillips screws (included).
 
Suggested minimum gap between tempered glass panels is 7/32" (5.6 mm).
 
They join vertical glass wall panels and provide rigidity to reduce flexing when pressure is applied.
 
They can also serve as floating indicators to alert pedestrians of a panel's presence in dimly lit areas.