Conical Burr Coffee Grinder – Coffee grinder with Stainless Steel Conical Burr Mill, 80 Grind Settings from Fine to Coarse, Electric Coffee Grinder with Glass Coffee Canister. Super Stable Coffee Grinding System – The Professional Conical Burr Coffee Grinder is designed with super stable 40mm stainless steel conical burr system to reduce the amount of friction and heat thus protecting the essential oils in the coffee bean and preserving maximum coffee flavor and aroma for all grind settings.