The one you really want is made by Ferret Instruments. They are very bright high quality lights that have been sold under several brand names including the red MSD. Unfortunately they went out of business last year. You can still find used ones and probably some new ones online. Try Google or ebay. If you get one never loan it to anyone. They will forget to give it back.

But for a good old light find an old used chrome sears penske non dialback. A couple of bucks at a yard sale. They must have sold millions of them.