| 摘要 |
An adjustable shifter for controlling the racing of a slidable ratchet shank includes a tubular handle for slidably disposed therein a shank of socket wrench which has a plurality of annular grooves on front outer periphery and ratchet on rear outer periphery, a shifting mechanism wrapped on the rear outer periphery of the shank having a shifter elastically engaged with the ratchet and positioning mechanism wrapped on the front outer periphery of the shank including a catch ring engaged with the annular grooves of the shank. It is characterized that when turns the shifter for 180 degrees, the shank will change its racing direction and when disengages the catch ring with the annular grooves, the shank is free to slide within the handle to change its length relative to the handle.
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