(57) [summary] [purpose] hex wrench, it measures the simplification of work to loosen or tighten the screw or in any one of the tool Phillips screwdriver or flat-blade screwdriver. [Configuration] hex wrench to the head of the screw, you can loosen it or or tighten the screws on either one of the tool Phillips screwdriver and a flathead screwdriver concave shape of the hole or subjected to groove Allen wrench Phillips screwdriver or flat-blade screwdriver to opposed to each it is intended to.
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