Worked for 3 hours straight on a single Combat Abrasives belt, and it still cuts perfectly
I have to say I have been really pleased with these belts from Combat Abrasives . The 60 grit cuts as fast as a 36 in any other band. The 120 cuts as fast as a 60! The seem to last a bit longer then the blaze belts as well. Great belts and some great customer service!