DIY key with gear

Do not rush to throw away the old hand drill, from it you can make a wonderful device for unscrewing bolts and nuts. The main thing is to choose a drill with a steel mechanism inside, because a lot of force will be transmitted to the gears in the new tool.

The resulting key combined the advantage of a powerful wrench with the convenience of a ratchet for the heads, in addition to a rotating handle, only the reversing mechanism is missing.

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