Goplus 4pcs Adjustable 8" 10" 14" 18" Heavy Duty Pipe Wrench Set Monkey Heat Treated Solid Steel ConstructionThe handle of the wrench is made from malleable iron and the head is made from forged steel which is solid and hard for long-term durability. Multi-Dimensions IncludedThis wrench set includes 4 wrenches of different sizes, they are 8", 10", 14" and 18" to meet your multiple needs. Precision Machine TeethFor the exquisite manufacture, the teeth of the wrench is precise. It can grip pipes securely and tightly. Spring Loaded HeadThe spring loaded design on the wrench head provides fast jaw grip and release to improve working efficiency. Plastic Wrapped HandleThe handle of the wrench is wrapped with plastic to make you grasp the wrench more comfortable.