SBC B15 - this is the Small Bayonet Cap (SBC) lamp holder which goes with the small B15 light bulb (the bayonet cap bulb is the push in bulb)
BC B22 - this is the Bayonet Cap (BC) lamp holder that accompanies the B22 light bulb - larger in size than the B15 bulb
SES E14 - Small Edison Screw (SES) lamp holder to accompany the SES E14 light bulb (the edison screw bulb is a screw in bulb)
ES E27 - Edison Screw (ES) lamp holder accompanies the larger E27 bulb
We also stock E12 and E26 lamp holders but these are generally, in lighting, used for lighting to be used in the US
http://www.light-fix.co.uk/unswitched-lampholders-b15-and-b22/
Bayonet Cap BC Lampholder |
Copper E27 Lamp Holder |
SES E14 Lampholder
http://www.light-fix.co.uk/unswitched-lampholders-e14-and-e27/