paid about $20 for three chains for my Craftsman "18 gas chainsaw. Restored like-new performance and used to clear over-grown shrubs, small trees, and brush. Several cuts involved cutting roots in the dirt. Used for total of 2.5 tanks of gas (approx 3 hours cutting time). Chain is still sharp and have two spares to go. Thinking about throwing away the file and buying more of these chains.