The Sthil OEM Oilomatic Replacement Chain MS 250/MS 251 P/N: 3960 x68 is a high-quality chain designed specifically for STIHL chainsaws. Made for 2-stroke engines powered by gasoline, this chain is compatible with the MS 250/MS 251 model and comes in a pack of 1. It is a reliable and durable option for maintaining and repairing your chainsaw, ensuring smooth and efficient operation in your yard, garden, or outdoor living space.