Hi, I trying to securer a lamp holder to a lamp stand, the end of the lamp stand has a 14mm ID thread, and the lamp holder has a 10mm ID thread, can you please tell me what fitting I need to fix the lamp holder to the stand, here is a picture of the lamp holder I'm going to use no 910386
http://buy.maplin.co.uk/Free_UK_Delivery/Switched_BC_Lampholder_17680_v2.htm
http://buy.maplin.co.uk/Free_UK_Delivery/Switched_BC_Lampholder_17680_v2.htm