Suitable for regular mouth Mason jar: such as jars in 60 mm inner diameter and 70 mm outer diameter, height 130 mm; Note: the lid hole diameter is 10 mm, and the silicone rings diameter is 8 mm, so a straw less than 6 mm is suitable for these lids Quality material: made of stainless steel, reusable and durable, rust-proof and leak-proof, dishwasher safe and unbreakable Utility: fit for toddlers (less spills), kids and adults as the straws are a proper length for 8 oz to 16 oz regular mouth Mason jars, suitable size for those thicker shakes but not too wide for little mouths Widely use: it can be applied to drink, like coffee, tea, juice, also can be applied as a storage lid Extensive usage: it is suitable for parties, craft projects, diy candles, to make soap pumps, torches and much more, the lid is compatible with ball and wide Mason jar, a friction zone is designed to ensure non-slippery Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you!