Hario V60 Glass Coffee Dripper 02 is a perfect complementary item to other Hario coffee servers and filters. For best tasting and proportional results, one should match it to a 600ml or 700ml sized server and a perfectly fitting 02 sized paper filter. Cone shaped structure allows layers of ground coffee and hot water to mingle together and brew the tastiest cup of coffee. Large single hole allows the liquid to flow through to a cup or server. Speed of the water flow varies the taste of coffee and the brewer wields full control. Spiral ribs on the inner surface of the cone allows space between filter and cone so they won't stick together. The cone shaped dripper is made of glass with a removable black AS Resin base and handle. Comes with a matching black measuring spoon. Make lots of heavenly aromatic cup of coffee anytime and however you like! Note that the maximum temperature difference from hot to cold or vice versa is 120 degree celsius.