An updated version of the original and best selling park master link pliersmany non shimano derailleur chains use a master link that allows the chain to be installed and removed by handwhile this type of masterlink doesnt require a traditional chain tool over time dirt and corrosion can make it very difficult to separate by handmlp 12 master link pliers have cleverly redesigned tips allowing them to be used to re join stiff or corroded master links as well as split themsimply insert the spe