The handle of the wrench is made of high-strength malleable iron and the head is made of heavy-duty forged steel. The teeth are sharp, do not break, do not curl, are very wear resistant. Forged hook jaw for quick grip and release, allowing you to easily make quick adjustments. The wrench handle is wrapped in plastic, and fits well in your hand. It allows you to grip the key more comfortably, not easy to slip. The wide I-Beam handle provides better weight distribution and saves labor. Suitable for all pipe repairs that require a tight grip, such as tank repair gas, household plumbing, vehicle maintenance. The deep grooved teeth of each straight wrench lock in place to provide a secure grip around smooth, round surfaces like shower heads or bathroom sinks and drains. Wrench sizes: 8", 10", 12" and 14" and carry bag.