Pry bar set is made with heat treated steel to proved rolling head with extra durability, strength, and longevity on the job. Heat treated steel provides these pry bars with superior quality to get any job done. K Tool International pry bars are made for longevity and are resistant to bending, breaking, or corrosion. Pry bars feature high leverage rolling head with long tapered body to align drift. Rolling heads provide high leverage pivot points for heavy machinery, tables etc. Use these rolling head pry bars for many jobs. Align bolt holes on two separate items, wedge pry bar, pull/push seals and bushings into place. Great to move heavy machinery.