Ive read that you have to buy a correct one for the 415 chain but I just used my cheepo bicycle one and it worked fine. Just make sure you have the pins lined up.
I think that Dans BMX has 415 chains and masterlinks.
Many different ways to break a chain or put one together.. When I didn't have a tool - if there is a will there is a way - but - I perfer to use a chain tool - so easy.. Happy Riding from - Mountainman
Really? Why? Thats what I paid for my bicycle that I put the motor on. That is more than the price of a good kmc chain to replace the POS chain that the kit came with. What advantage is there in buying a tool that is better than the **** you are working with?