The plastic bayonet B22 4-piece lampholders available in 10mm or 13mm (1/2”) female thread with or without on/off push bar switch.
Standard colour: Black and White

Available options:

B224PCBK/10 10mm Black BC lampholder
B224PCWH/10 10mm White BC lampholder
B224PCBK/13 1/2” Black BC lampholder
B224PCWH/13 1/2” White BC lampholder
B22PB10/BK 10mm Black BC lampholder with push bar
B22PB10/WH 10mm White BC lampholder with push bar
B22PB13/BK 1/2” Black BC lampholder with push bar