Unior screw type chain toolthe basic screw type chain tool is intended for home users the simple tightening of the spindle fits the chain pin perfectly the ergonomic design makes it precise and easy to use it works with all chains from 5 to 11 speeds features works on all chains from 5 to 11 speeds the handle is plastic dipped and enables comfortable use buyunior workshopfrom chain reaction cycles the worlds largest online bike store