United Green Manual Coffee Grinder with Ceramic Burr, Portable Coffee Mill, Aeropress Compatible, Stainless Steel Precision grind this coffee grinder has been crafted with excellence and precision Adjustable no need to unscrew the entire grinder in order to adjust the grind size Rust & damage free: this coffee mill is made of high grade stainless steel which gives it a modern look, but most importantly increases its durability Stainless steel body & lifetime warranty; manufactured from high quality corrosion resistant stainless, the grinder is designed to be easy to use Portable: the united green co travel manual coffee grinder was specifically designed to fit into an aeropress making it easy to take with you