About double match pulls: We were the first to have a repeatable match device. This was beautifully engineered silver clip but we found the mechanics of pulling the match, made the pressure on the match head weak,

We stopped selling them within the first year. There were other reason not to use a double: The cost of the single match pull was so low that most clients chose to use singles. The other reason was that since the first pull worked, there was no reason for a backup.