Marlux 3-Inch Pepper Mill and Salt Mill Set, Clear Acrylic with Matte Stainless Steel Finish Top Salt Grinder grinding mechanism is hardened steel with hand cut groves, coated in 18/10 Stainless Steel and is corrosion resistant Pepper mill grinding mechanism is hardened steel with hand cut grooves Perfect for finely ground peppercorns, sea salt, spices or seed Grinder bodies are made of PMMA, a strong, lightweight, and shatter resistant Acrylic which is BPA Free