Park Tool Master Chain Tool CT 4.3. Free yourself from the chains of not being able to work on your own chain. If you think that's a mouthful, how about this: I need to work on my chain but don't have a chain tool so have to go to the bike shop where they'll keep my bike for 2 days and charge me 40 bucks to replace my chain. So now you know the power of the Park Tool Master Chain Tool. This chain tool is designed with precision so it's ready to master even the smallest pins on 11 speed road chains, plus, its new Integrated Link Pocket design keeps the chain perfectly straight for ease of use.
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