The Yellow Jacket Fin Straightener 61170 straightens even severely damaged condenser and evaporator fins quickly and easily. Also cleans away lint, rust, dirt and other debris. Straightening wire tension is adjustable to accommodate various fin types. Wires are held by a sturdy metal body. Includes a long comfort-grip handle, making straightener easier to use. Head is 20 percent wider than 61150 to straighten more fins in one pass.