SaferCCTV 42.5mm Cylinder Piston & Rings Kit Assembly for Stihl 025 023 MS250 MS230 Chainsaw Replaces 1123 020 1206 & 1123 020 1220 1. Unique service can make you rest assured to buy--(1)60-days money-back guarantee. (2) Professional sellers, and professional guidance, have more cylinder to choose . (3)Provide professional use tutorials. (4) Often give away free tool products (because we clean stock). Please contact us if you need any of the above services 2. Replaces manufacture Part #: 1123 020 1206 & 1123 020 1220 3. Fits: STIHL 025 023 MS250 MS230 Chainsaw 4. This is non original aftermarket parts, please check the pictures for compatibility before buy it 5. Package include: 1pc cylinder, 1pc piston, 2pcs clips, 2pcs rings, 1pc pin