#7 stopper - with 3/8 inch hole. Top diameter 1.43 inches (36.3 mm), bottom diameter 1.19 inches (30 mm), length 1 inch (25 mm).
BPA-free stopper made of food-grade materials. Injection molded TPE for superior consistency throughout. Perfect for use with carboys, as the material sticks well to glass and PET, even when wet.
Max. Temperature Rating: 158 °F (70 °C).