The Rescue Bit is not unique. It is just a good quality carbide burr.
Buy a set of Carbide burrs and a set of Left Hand Cobalt drill bits for the same money and have a more versatile arsenal of weapons? For example:
https://www.amazon.com/Tools-Cobalt-64-Inch-Assortment-30520/dp/B0002NYBJG
https://www.amazon.com/Grip-Carbide-Rotary-Burr-Set/dp/B013WHOEMW