HIFROM TM Replace Piston Kit With Rings and Pin Bearing 49mm Fit For Stihl 039 MS390 Chainsaw NEW 1. New high quality aftermaket replacement parts 2. Fit for chainsaw models 039 MS390 3. PACKAGE Included: 1pc piston kits, 1pc PISTON NEEDLE BEARING 4. HIFROM focus on provide high quality products at fair price: from Professional Factory; if you unsatisfy with our product, you can return to our USA warehouse, no risk.