Tribest Dynablend, DB29 Pitcher Silicone Suction Lid Price:$8.50 Add Your Review Enter Quantity Facebook LikeGoogle Plus OneTweet Widget SHARE: Details Reviews Q&A Support Creates an airtight seal on Dynablend pitcher to minimize oxidation. This is an optional accessory. Q&A for Tribest Dynablend, DB29 Pitcher Silicone Suction Lid Question: What is the diameter? Answer: Hello, Thank you for your inquiry. The stretchy portion of the lid is 6 inches in diameter. The whole circular part (excluding the lip) is 7.5 inches in diameter. Ask A Question Your Name * Your Email * This allows us to send you a response by email. Question * What code is in the image? * Enter the characters shown in the image. Feel free to ask for help using the form below, or call us: Toll-free: 1-888-254-7336 International: +1-714-879-7150 Support Your Name * Your Email * Product Name * Support Request * What code is in the image? * Enter the characters shown in the image.