100 x Original BT UK to US & US to UK Telephone Adaptor Kit (200 pieces)
100 x UK to US Adaptor (431A plug to RJ11). 100 x US to UK Adaptor (RJ11 to 431A). 200 pieces in total in 1 outer box. 100 x UK to US adaptors 431a female to RJ11 male. 100 x US to UK adaptors RJ11 female to 431a male.