If you own the Husqvarna 155, I do, and do your own upkeep and maintenance on the mower, I do, these replacement blades are a must buy. They are significantly cheaper then from a dealer or a popular lawnmower replacement parts mail order house, and look to be genuine Husqvarna blades including the sheer pins which alone would cost approximately $10 just by themselves. This is something that shouldn't be passed up.