Easy to modify, just by fitting it into the head! This is a set of thin joints and washers. Please attach it to the neck joint included with the Obitsu 11 body. Compatible with Obitsu 11 and ob11. For older Nendoroid figures (under number 300), the joint is connected inside the head and cannot be replaced, so this product cannot be used. Thin joint x 2 (approx. 3cm x 2cm) Washer x 10 (approx. 8mm diameter)