The package contains 30 pieces of silicone nozzles for a hole of approx. 0.67 inches/17 mm, suitable for stainless steel or silicone straws, the ideal addition to your cups or straws. The lid seal of the glass can hold the straw firmly fixed, reducing the risk of leakage. Well made: suitable for 12 mm hole of the cup lid hole punch for straws. You can punch your own holes if you want. Make sure the size is correct. Thanks to the simple and practical design, your straws can fit through. The design is simple and easy to use, and the straw can be easily pulled through. play a big role in daily drinking water and drink juice. This straw hole plug is a great gift for your loved ones when they move into a new home. Practical and reliable: a total of 30 pieces (1.7 x 1.7 cm) to meet your daily needs. You can also use it for your good friends, it is a nice gift. Versatile use: silicone seals can be used as a straw hole plug for mason jar lids and are also suitable as a preserving jar lid for sourweed and kimchi containers , home-brewed wine and beer fish. sser and many other applications to solve your problems exposure problems.