TUFBIT is a patent-pending, high-powered magnet, encased in a durable housing infused with carbon fiber, that attaches to any drill equipped with a skyhook mount. Includes both a left and right spacer unit for preferred attachment and drill brand. Securely and safely holds your drill bits and screws in a forward-facing position out of the way of grip. Perfect for contractors, DIYers, and anyone who needs a convenient way to keep metal items handy. Never lose a screw again!