Not every glass panel meets a round post. Some meet a wall, a ledge, or a square tube, and those need a clip with a flat back. The 812F is that clip for 1/4-inch tempered glass: a two-piece clamp with a flat mounting base that bolts to the surface, then closes on the panel edge with gaskets between metal and glass. It holds a low partition, a landing guard, or a divider at the point where glass meets the building. Two finishes suit two very different rooms. Polished brass matches a brass railing and the brass fittings in the same family; it develops a patina and polishes back when wanted. Chrome gives a bright, hard edge for a contemporary interior. Both are sized to 1/4-inch glass only, so for 3/8 or 1/2-inch panels choose the 813/03F or 813F flat clips. Ships from US inventory.