• 1/8 IP Top
• 1/4 IP Bottom
• Height: 5/8"

Brass Lamp Necks - Couplings are threaded differently at each end. One end screws onto 1/8 IP the other end screws on to 1/4 IP. Very useful when joining these two commonly used lamp thread sizes. Solid Brass

Common Lamp Thread Sizes

• 1/8 IP - 3/8" outside diameter, screws into most lamp sockets
• 1/4 IP - 1/2" outside diameter