Do not use for other than its intended purpose. Work with a protective equipment to safety. Be careful to get a shock as it is a non-insulation tool. Use the product with a suitable size of nuts and bolts. Hold deep into the mouth of bolts and
I chose by the price. Anyway, regardless of the quality and precision, for children it is good to turn the bolt nut for the time being. There is no problem with the function. It is also recommended for automotive use.