| 摘要 |
An adjustable horse bit includes a mouthpiece and first and second cheeks. The mouthpiece has first and second bars. The first and second bars each have a substantially smooth outer surface and a threaded outer surface. The first and second cheeks each have a connector with a threaded passageway. Each of the threaded passageways is engaged with one of the threaded outer surfaces. A collar is fixed in each of the passageways. Each of the collars is arranged on the substantially smooth outer surfaces of the first and second bars and has a through-hole formed such that the substantially smooth outer surfaces can advance through the respective collars when the respective first or second cheek is rotated.
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