HIFROM(TM Replace Cylinder Piston Pin Rings & Circlips Rebuild Kit Assembly 49mm Fit For Stihl 039 MS390 Chainsaw NEW 1. New high quality aftermaket replacement parts 2. Fit for chainsaw models 039 MS390 3. This is non original aftermarket parts, please check the pictures for compatibility before buy it . 4. HIFROM focus on provide high quality cylinder piston kit at fair price: Professional Factory; Professional technical support; if you unsatisfy with our product, you can return to our USA warehouse, no risk.