Peugeot mills were created in France in 1842 and they have been perfecting them ever since. The case hardened mechanism provides an even consistant grind on pepper because it has both grinding and channeling grooves cut into the metal to ensure an even grind. This is accomplished because the channeling grooves are designed to line up the peppercorns with the grinding grooves and to crack the corns in half prior to the actual grinding process. Their salt mills feature a corrosion resistant stainless steel grinding mechanism to ensure years of use. Peugeot has expanded the number of styles, shapes and colors of their mills to bring "fashion to the table", while ensuring quality by using the original Peugeot mechanism. Each style is fully adjustable and re-fillable by unscrewing the top. The case hardened steel pepper mill mechanism and the stainless steel salt mill mechanism have a lifetime warranty.