The utility model provides an adjustment with the counter weight and install the for adjustment the fishing of counter weight use doubtful bait, even the wire loop position how much the various fishing of differences use doubtful bait, also can install the for adjustment counter weight. Particularly, load and unload the freely to install in adjustment for the counter weight of fishing with the head of doubtful bait, characterized in that the adjustment is with on to the side of the one of counter weight, be formed with the break -over set up in the fishing is with the slot hole of the wire loop of doubtful bait tossing about mutually of one side, be formed with be used for load and unload in the fishing during with the action of doubtful bait not with the fishing is with the notch of the counter weight portion contact of doubtful bait. In addition, provide one kind install the for the adjustment fishing of counter weight use doubtful bait.