We are the only one manufacturer who can make bonded caps in China! Product Specifications Classification:Laboratory Bottle Brand Name:ALLPRO Model Number:V24020C Place of Origin:Jiangsu, China (Mainland) Color:clear VOL:20ML Top Size:24mm Vial Size:27.5*57mm Material:1st hydrolytic class glass Series:20ml 30ml 40ml 50ml 60ml