HUT™ Products offers these Blanks for you to drill and use the call reed of your choice for your custom calls. The call reeds, with the exception of the Crow and Cow Elk Call, will fit calls that are drilled with a 3/4" Drill Bit 0158 for the Barrell and a 31/64" Drill Bit 0176 for the Stopper. The Crow and Cow Elk Call requires a 41/64" Drill Bit 0143. Hardware is not included with any of the blanks.