Hi adam.....its an "oxford" breaker/riviting tool, paid about £70 approx 4 yrs ago......ive never used the breaker option, quicker and easier just to use the angle grinder on the old chain......if I was to buy another I would go for the "DID" riviter......plenty out there to choose from but in this instance.........never buy cheap tools 
as can be seen in the piccie.can break and rivit 520 and 530 chains so good for both 600 + 1000 fazers, you'll get a 520 only riviter cheaper....lucky me has both bikes so went for the bigger one ...

as can be seen in the piccie.can break and rivit 520 and 530 chains so good for both 600 + 1000 fazers, you'll get a 520 only riviter cheaper....lucky me has both bikes so went for the bigger one ...
One, is never going to be enough.....