I bought a FijiCube 800 gph Internal Overflow Box on ebay. It was supposed to be brand new. When it arrived it is an 800 gph FijiCube brand overflow box with an Eshopps Template and Eshopps 60mm Drill Bit. What size drill bit comes with the FijiCube 800 gph Overflow Box? If 60mm is the wrong size, I will have to buy the right size.