Antique brass finish steel lamp socket cup is made of a medium heavy gauge steel that will not easily bend or warp. Center hole slips 1/8IP and measures 2-1/2" tall, 1.72" O.D. (outside diameter) and 1.65" I.D. (inside diameter).
This lamp socket cup is of a slightly larger size which fully covers and properly fits our E-26 lamp sockets:
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