There are two types of doll armature – the older “standard” type and the new “Snap-Proof” - please refer to the listing pictures. This “Snap-Proof” armature from the premium doll armature manufacturer "Jeton" has a spherical shape to the small end of the link.
This improved link shaping allows for maximum contact inside the joining link, thereby providing a higher degree of friction, and in turn strength of the joint. This added strength, together with the rounder shape of the link(s) also allows for greater flexibility (shaping) without the problem of a bend breaking.
Important information concerning the sizing of doll armature.
The plastic armature used for today's doll-making was originally designed to be used as flexible hose for the transmission of fluids and the measurement terms refers to the diameter of the hole in the middle of the link. Thereby enabling users to judge the volume of fluid that could be transmitted.
At some stage a couple of decades ago doll-makers realised the armature was perfect for creating doll skeletons, and they simply adopted the manufacturers size reference of the armature.
Jetonic now manufacture doll-making specific armature (called Snap Proof) that is a solid link and is fully inter-changeable with the older type link.
It is important to recognise the sizing reference bears no relation to the actual physical dimension of the armature - please refer to the photo for actual sizing