These cut-off wheels are what you'd expect from Metabo.  They cut well and fit the Metabo tool perfectly.  I've punished them with 4" cast iron sewer pipe, and they performed beyond my expectations.  The diameter wears down quickly with such a punishing application but at no faster rate than the much more expensive competing products.  If you are cutting a lot of heavy gauge steel and need the full diameter wheel, then this bulk pack is the way to go.