This product is hollow tubular process accessories,Widely used in all kinds of construction machinery / scientific research instruments / straw cup / beverage bottle.
It can be used as the top connector of the straw
This product is a hollow tubular straw joint. The size of 510 interface (the part with silicon rubber ring) is 8.5mm and . It is used at the top of the straw, which can give you a better taste when drinking fruit juice or drinks. This product does not contain liquids or batteries
(510 and 810 indicate the model name, not the product package quantity)
Package Contents: 1 x Straw joint