Metal Straw Silicone Tips/CoversOnly fit for 6mm metal straws, Please check before buy it. Food Grade Silicone, rubber tips, and BPA FREE, Odorless Lip touched no hard, no cold and hot, silicone cover contact comfortable and soft, bite It without worries Silicone tips Outdiameter: 8mm, indiameter: 6mm, fit for outdiameter 6mm metal straw. We recommend that you replace the tips every three months. Color: 7 pieces each of white, red, green, black, blue, orange, gold, total 49pcs silicone straws tips, notice: straws are not include. Avoid metallic taste and more safer, some people like stainless steel straws but dont like the metallic taste, so silicone tip cover make our mouth is not in direct contact with the straws, keep away from the taste, and dont worry about chipping your lips, teeth, its more safer, especially for children, driver.