Many stock chains don't have a master link. Anyway, you shouldn't use one on your new chain. I like DID chain and steel Esjot sprockets. I like good tools so I bought a Motion Pro chain breaker and riveter. It's expensive, but then you can buy 120 links of DID chain at a bargain price and break it down to your length. Follow the directions and always measure (and count) three times and cut once.