This set of three Stainless Steel Funnels is ideal for filling small bottles and containers. The large mouth measures 3"/7.5cm, and the stem measures .5"/1.25cm. The medium mouth measures 2.25"/5.5cm, and the stem measures .4"/1cm. The small mouth measures 1.75"/4.5cm, and the stem measures .20"/.5cm. You will find so many uses for these around your kitchen!