Rubber dust cover: spout covers are made of flexible rubber, it can protects your liquor from debris, dust, fruit flies and pests Size: each size of pourer cap . 1 cm or 0.39 inch in diameter, and 5.5 cm or 2.16 inch in length, they fit for most liquor bottles and pourer with or without collars Tight seal: with tight seal, no have to worry about any accidental spilling out or fruit flies enter the Good and simple dust covers that solves a fruit flies problem Wide usage: suitable for wineries, wine clubs, pubs, clubs, restaurants, bars, coffee shops and so on A helper for bar bartender to pour and drinks The pour covers can keep dust, debris, gnats and ants out of your liquor bottles and solve a fruit flies problem, help sanitation by keeping pourer clean. Fits most pourers: There rubber pour covers fit for most liquor bottles and pourer with or without collars, easy to apply and remove. Color: black Material: rubber Package Contents: 48 x Pour cap covers Only the above package content, other products are not included. Note: Light 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.