This revolutionary Easy Wood Tool is the easiest, safest, and most versatile parting tool you will ever use " the only 1/8" parting tool you will ever need to purchase! Simply advance the Easy Parting Tool slowly into the workpiece, and begin cutting straight in. ItTMs that simple! The exclusive wedge-lock mounting system ensures a secure hold for the replaceable carbide cutter. Once dull, you can easily remove and install a fresh sharp cutter using the provided flex key. Say goodbye to sharpening! Tool comes with the Easy Flex Key and one Replacement Carbide Cutter.