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        Be able to keeps a nut on the wrench  | 
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        when the nut operated on the nut or bolt. | 
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        Operating the wrench more easily than a conventional | 
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        wrench in a narrow space such as a nacelle. | 
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        User can secure the nut onto the bolt or remove the | 
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        nut from the bolt with one hand and do not have to  | 
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        worry about accidentally dropping the nut from the | 
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        head. | 
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