12-237 SCIENTIFIC INDUSTRIAL JOINTS - FEMALE TO FEMALE ESSENTIAL ADAPTER W/ RING 180 CLEAR 18MM FEMALE TO 14MM FEMALE Go to amazon.com Related posts Which is the best 18mm bowl glass? FeatureUNIVERSAL JOINTS ADAPTERProduct net weight 20g Description12-237 SCIENTIFIC INDUSTRIAL JOINTS - FEMALE TO FEMALE ESSENTIAL ADAPTER W/ RING 180* CLEAR 18MM FEMALE TO 14MM FEMALE