This is a high quality aftermarket rebuild kit that fits your Stihl 024 or MS240 chainsaw. I rebuild saws and I use the same kits in my customers saws. I am not just a parts pusher, I know that the product I sell works, and works good. This is a 42mm kit with the gaskets you need. NIKISIL coated cylinder. You wont find a better aftermarket kit. this will get you back cutting for a long time at a great price. Kit includes all parts shown in the photo. I ship world wide.