This M14 to hex adaptor allows the use of an M14 angle grinder bit on a power drill with a three-jaw chuck. It is used to guide diamond core drill bits and is a quality Mexco product. The kit includes the adaptor, an allen key, and a drill bit. This adaptor converts the M14 connection to a Hex connection, allowing the use of an M14 fit Tile Drill Bit or Router Finger on a drill with a three jaw chuck.