DF54 grinder (dedicated for filter) for sale Color: Black A grinder specialized for filter grinds only and very fast, it won't take you more than 10 seconds to grind all the coffee beans, and its grind consistency is excellent. I don't need to say more, most people know it and its reputation. Honestly, the grinder is very luxurious and my use of it has been light, meaning one cup a day, and sometimes weeks pass without any use. Warranty: From the coffee tools store, its warranty has not expired yet. Reason: Its burrs are flat, and I prefer coffee when it's ground with conical burrs more.