Glass Clamps --- 4pcs of stainless steel glass brackets, size 53 x 33 x 20mm/2 x 1.3 x 0.8inch (H x L x T/D), suitable for 6-8 mm glass, allows to install onto square tubing or flat surfaces. Rustproof and Sturdy --- The glass brackets holders are made from 304 stainless steel, strong and sturdy, which is rustproof, waterproof and heat-resisted, not easy to damage. Self Adjustable --- Each adjustable glass clamps bracket comes with 2 pcs rubber gasket and micro-adjusting screw to keep sturdy and provide a solid grip on the glass. Easy Assembly --- Use a M4 hexagon driver to loosen Position 1 and 2, and then insert the glass into the gap, finally fix all the 3 screw with this driver, no drilling is needed. Safe Application --- The rubber gasket can be stably and safely secured to fixing in the glass, good ideal for fixing glass of balustrade, staircase, handrail, window and etc.