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핸들부분이
                                            0
                     =================================
                                          = - =
                                          = - =
                                          = - =
                                          = - =
                                          = - =
                                            ㅁ
요렇케 생기고요

"0"부분을 L렌찌로 잠그면
"ㅁ"너트가 땡겨져
"= ="축을 벌어져서 고정시키는 방식입니다