Holes are available in 1/4", 3/8", 1/2", 5/8", 3/4", 1"

Holes are drilled through the center of dummies along the height dimension.   For any other placement, please contact us. 

You should order the number of holes, in total, that you will require.  During the check-out  process, there is an opportunity for you to provide additional instructions.  You should indicate what size hole you need, in which dummy.  If there are any issues with your instructions, we will get in touch right away.