Finally broke my original pin after 10+ years of use and needed to get a replacement, now have two just in case one breaks while working on sizing a new chain. The Motion Pro stuff is quality and when used correctly it will last a long time, grinding down the chain pin before using the extractor is key.
If you bought the motion pro chain breaker you bought a great tool but just in case your pin breaks during a repair its a great idea to have a spare.A chain breaker goes through alot of stress when used and should you accidentally not line up the pin on the chain with the breaker you may soon find you need to replace the pin on your tool.
These replacement pins are GREAT...Just a tip for you guys....You shouldnt be able to brake these....If you push the pin straight and slow and backing off then doing more little bit a time....It will NEVER BREAK!!!! EVER!!!
it never hurts to have extra tools in the garage. I was breaking a chain, and the pin broke, things happen. So if you want to ride and get going make sure you have extra parts for your tools also and not just your bike.