These 122mm diameter PYREX funnels have a beaded edge for strength. They are fabricated from blanks formed to a 60 degree angle, which permits accurate fitting of the filter paper, thus reducing filtering time. Stems are approximately 15mm outside diameter by 100mm length. Material: Borosilicate Glass Code 7740. Funnel Style: Plain. Stem Outer Diameter: 15mm. Stem Length: 100mm. Height: 199mm. Top Inner Diameter: 122mm. Corning#: 6120-5.