SD Boy/Girl and SD13 Girl
These are the double jointed arms at the standard SD13 Girl length. They were originally introduced with Liselotte and Charlotte's Super Dollfie 15th Anniversary Version at Dolls Party 32 in 2014. They were released at Tenshi no Sato in March 2015, and were made available at all FCS locations in September 2015.
from Yahoo!Japan Auctions