The Champion 4 Pc. Heavy Duty Maintenance Reamer Set is expertly crafted for precision and efficiency in a variety of maintenance tasks. Featuring left hand helix and right hand cut technology, these reamers are designed to shear chips away from the operator, ensuring a safer working environment. Each piece in the set measures 3/8, 1/2, 5/8, and 3/4 inches, making them versatile for enlarging and aligning existing holes in steel, stainless steel, and other tough alloys. With flatted shanks compatible with power drills and drill presses having a 1/2-inch chuck capacity, along with a safety collar stop for enhanced stability, this set is an essential addition for professionals engaged in maintenance work, steel erection, fabrication, and truck or trailer repair. Constructed from surface-treated high speed steel, these reamers not only promise durability but also deliver consistent performance in demanding applications.