Ordinary plastic dipped handles on wrenches are designed to provide ______.

The implementation of ordinary plastic dipped handles on wrenches primarily serves the function of providing electrical insulation. This is particularly important in environments where there is a risk of accidental contact with live electrical components. By using plastic as a handle coating, the user gains a layer of protection against electrical shocks, enhancing safety during use. The plastic layer acts as a barrier, reducing the chances of electricity passing through to the user's hand.

While grip, durability, and corrosion resistance are beneficial properties of dipped handles, they are secondary to the primary purpose of electrical insulation in this context. These features can be considerations in handle design, but if the primary focus is the purpose of the plastic coating, insulation against electrical hazards is the most critical aspect.