Solid Steel Construction: The handle of the wrench is made of high-strength malleable iron and the head is made of heavy duty forged steel, which is solid for a long service life. Drop forged jaw is heat treated to resist distortion or breakage. The sturdy construction makes it reliable and offers dependability for your working. Precision Machine Teeth: High carbon steel forged and then quenched, the upper and lower hard teeth have large torsion force. The teeth are sharp, non- breaking, non-coiling, high hardness and wear resistance. For the exquisite manufacture, the teeth of the wrench is precise. It can grip pipes securely and tightly. Spring Loaded Head: With a full floating forged hook jaw for fast jaw grip and release, allowing you to easily make quick adjustments. Head heat processing, anti-rust and anti-corrosion, high hardness, not easy to wear. The spring loaded design on the wrench head improves working efficiency. Worm link clamp, nut outer body knurling anti-skid
