The Hexagonal Shank Metal Flex Universal Extension Bit Holder is the perfect tool for any DIYer or professional. It is designed to solve the problem of dead ends in the maintenance process and can be used to extend the reach of a drill bit, making it easier to drill in hard to reach places. Made of high quality stainless steel, it is rustproof and durable. It also reduces strain on the human body, making it a more comfortable and efficient tool to use.