Problem Solvers Chain Tensioner & Derailleur Hanger
Problem Solvers Chain Tensioner & Derailleur Hanger, Problem Solvers Chain Tensioner with Hanger Features: For quick-release hubs, use Surly adaptor (CH9996) Allows for the use of a derailleur on frames without derailleur hangers For use with rear-facing horizontal dropouts and 10mm axles