A Pre-Drilling and Countersinking tool, SmartBit allows for Woodworkers and Deck Builders to consistently make a perfect hole and fit every time.It is designed specifically for deck builders working with hardwood or composite materials. SmartBit is designed for Headcote and Deck Fasteners, but works well with all similiar sized screws. Visit StarbornIndustries.com to learn more about the SmartBit