3/8 in inner diameter, 3/4 inch outer diameter. This armature was measured and made to fit inside of Primsley’s long legs and arms. It gives her long legs strength to be able to stand up without putting to much strain on her legs. The arm sections go down to her elbow area helping her arms maneuver into more poses.
Care should be taken when Inserting armature to prevent damage or cracking to the vinyl parts.