This switched lampholder is a perfect replacement lampholder for a standard table lamp.
Lamp Cap: BC | B22 | Bayonet Cap
Min Shade Hole Size: 26mm
Max Shade Hole Size: 32mm
Max Wattage: 60w
Thread Entry: 1/2"
Please Note: This 1/2" lampholder will NOT fit the 1/2" BSP gas pipe, BSP gas pipe is alot larger in diameter and is a totally different thread style.