Chain tools are used to help remove, install or repair your bikes chain - either in the workshop or out on the road / trail.
Pedros Chain Checker Plus II
Pedros Toothbrush drive chain cleaning tool
Pedros 6 pack chain tool
Birzman Link Pliers
The Pedros Chain Pig is designed so that you can clean your chain hands free. The series of rotating brushes get chains really clean.
Professional Chain Scrubber - CM-25 - from Park Tool USA