Product size: 3cm (outer diameter) x 2cm (inner diameter) x 1cm (height) This CO2 cylinder gasket is designed for pink soda refill bottles, suitable for DUO Terra Art O-ring gasket: CO2 cylinder gasket helps you connect other devices and adapters to the soda refill hose, and easily replace soda cans Good sealing performance: O-ring performance reliably solves these problems: air leakage, not closing when pressing the handle, slow leakage when connected O-ring sealing is made of high-quality materials, stable and reliable performance, no deformation, long service life Direct replacement: O-ring as an upgraded auxiliary kit for , perfectly matches the pink soda can, no special tools required, direct installation Colour:Yellow Material:Silicone Rubber Package Contents: 5 x Soda machine seal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.