Yup. Also need a 3/4 length spring-bar to line everything up while attaching. I know where the tooling now is from the insulator business but do not know if there were any simple round ones. Photos show the 3-hole sort of thing I'm thinking about and other tooling with unknown actual output. BTW, after the cost of making the tool one hour of production would make a 100 year supply of these, so perhaps best to find something already in production.