A roll pin of the proper diameter works pretty good.Put the end on a bench vise with the slit area pointing up. A couple of light whacks with a hammer,and you should be all set.A rubber cap plug on the other end for a better finger grip,and for about .28c you can not go wrong.I mean after all,you are only gonna use the darn thing a couple of times,unless you just cannot keep your GD fingers out of the carbs.If that is the case you need more than a d-tool.

Al