This will convert a lamp holder fitting from the standard 1/2" thread down to 10mm, i.e. M10 thread. Thread Reducer Adaptor.
Connection bush 10mm male to 10mm female
1/2" MALE TO 10MM FEMALE BRASS LAMP HOLDER REDUCER CONVERTER ADAPTOR
Reduction bush 10mm male to 8mm female
Reduction bush 10mm male to 1/2" female chrome plated
Reduction bush 10mm male to 4mm female
2.1mm x 5.5mm DC Power Male to Female 5 meter 12 Volt Power Extension Cable
