ratchet drill
... ratchet coupling 棘轮联轴器，爪形联轴器，闸轮联轴器 ratchet drill 手扳钻 ratchet gear 棘轮齿轮 ...
机 spanner drill chuck ; Key type drill chuck
drill chuck with thread adapter
THREADED KEY-TYPE DRILL CHUCKS ; TYPE DRILL CHUCKS
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