These won't back out if you over-tighten the locknut

Center Hole to End of the Ball End is 4mm and 10mm

Length : 132mm

it can be combined with Alto's optional weapon 1

Bandai - #24 Gundam Astray Gold Frame Amatsu Mina "Gundam SEED Astray", Bandai RG Batteries Receiver Plug These won't back out ifFrom the immensely popular side story "Gundam SEED Astray" comes the guardian of the "Declaration of the Sky", Goldframe Amatsu Mina, to the RG series! The stealth functions of Amatsu Mina have been independently investigated. The differences in texture of the external parts of the actual mobile suit have been realistically recreated through the use of the colored plastic and different materials. The arms are movable and have the ability to be