Heavy duty heat treated steel for strength and durability Forged hook monkey wrench hook jaw for greater grip strength Quick size adjustment with non stick nut Straight pipe design for both contractor and DIY plumbing needs Lifetime Warranty - All Edward Tools products come with a lifetime warranty Edward Tools Pipe Wrench is a heavy duty heat treated steel plumbing wrench tool with a forged hook jaw for a stronger grip. The quick adjust nut is non slip and is used to quickly change the width of the wrench. This plumbers wrench tool is made with a straight pipe design for both contractors and DIY use. Edward Tools Pipe Wrench comes with a lifetime warranty.