Description Brand new Hyway 50mm cylinder and piston kit. Fits Stihl concrete cut-off saw models TS410 and TS420. Kit includes Nikasil plated cylinder, piston, rings, wrist pin, circlips, and Oregon spark plug. Nice high end kit made by Hyway with 1 year warranty against manufacturer defects. We are a U.S. seller, we ship within 1 business day, and you will get your parts quickly!