You don't realize how nice it is to have fresh blades until you replace them...now the wood passes through faster, quieter and smoother and with 2-sided you can flip them when done. Be advised, these are not carbide tungsten or anything crazy, they'll dull a bit after passing wood for 15-20 minutes if the wood is hard so best to think of these like disposible razors: great for a while but know when it's time to move along.