1.Set includes beech wood pepper mill with black matte finish and inch beech wood salt mill with white matte finish 2.Pepper mill has 2 Stage grinding mechanism made of case-hardened steel which is specially treated to keep the teeth razor sharp and protect from corrosion 3.Salt mill mechanism is designed to resist corrosion from dry salts. To get the best out of your Peugeot salt grinding mechanism, you should use dry rock salt, with a max. Not recommended for sea salt. Mills comes partially filled with rock salt for immediate enjoyment. 4.Classic grind adjustment: turn the top knob tighter (clockwise) for finer grinds; looser (counter-clockwise) for coarser grinds 5.To get the best out of your Peugeot salt grinding mechanism, you should use dry rock salt, with a max