Details
Manufactured by Crabtree in the UK as their part number 3412, these are a best quality Bayonet Cap (BC - B22d, that is like a standard push in lamp bulb fitting) batten lamp holder.
These have the 4 way terminal block and used to be known as 'loop in' - this is now the standard.
These have the 4 way terminal block and used to be known as 'loop in' - this is now the standard.