These are my personally designed Jack Skellington hands that insert into a 3/4" PVC pipe. The do fit in the pipe, but a little tight so some sanding might be a good idea. If you're looking to make a life-size Jack Skellington figure these hands are made for that! Check out my website link to see my Jack Skellington life size sculpture on YouTube. Look on my profile for the neck, shoes, and possibly head (if it will let me upload it) for my Jack figure, if you want to create your own.