Hario Ceramic Coffee Mill "Skerton": Manual Coffee GrindersAmazon: Hario Ceramic Coffee Mill "Skerton": Manual Coffee Grinders: Kitchen & Dining.ceramic grinder for coffee grinder,The Best Burr Coffee Grinder in 2018: Reviews & Buying Guide .Steel or Ceramic Burrs? Material-wise, Burr Coffee Grinders are either made of high-quality ceramic or stainless steel. They are also available for both budget and high-end users. Steel burrs are cheaper to manufacture and replace though they tend to have a shorter lifespan. Ceramic burrs are durable and are ideal when it.