Iron man Red Snapper有冇人識加一截延長膊頭關節? 型好多,見圖

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有RedSnapper嘅朋友有冇覺得佢膊頭太窄,手臂又粗,搞到隻手垂唔直. 但係我係網上見到人地加闊係膊頭(見圖)多加一截銀色關節.型好多,擺pose都靚啲.有冇師兄知邊度可以買到類似嘅關節?