About Size: Upper Diameter: 56mm / 2.20in; Lower Diameter: 46mm / 1.81in; Body Height: 35mm / 1.38in (might have 1mm measurement error)
Our Rubber Stoppers provide exceptional seal for many applications; fits all flasks, test tubes or any glassware with 24/40 joint
Excellent resilience and retain pliability over a long period
Please note these rubber stoppers are not food grade
Guaranteed after-sales service: if received defective or damaged item, please contact us. We will definitely help you solve the problem until you are satisfied