E-26 Porcelain Keyless Two-Piece Ring Socket with 8-Inch 18-AWM TEW Wire Leads. Rated 660W 250VThis socket requires a 1-7/16 in. (36.5 mm) diameter mounting hole. The two-piece porcelain body mounts by passing the threaded portion through the hole, with the retaining ring securing it from the opposi... See More