CRL's Drill-Thru Connectors are the ideal product for hanging 3/8" to 1/2" (10 to 12 mm) glass panels in a high moisture environment where clamping onto the edges of the glass is not the most secure method. The Connector package contains two caps, one for 3/8" (10 mm) and one for 1/2" (12 mm) panels. Drilling 1/2" (12 mm) holes in the glass is required. The weight capacity for each Drill-Thru Connector is 35 lbs. (15.9 kg).