| 摘要 |
A closure 1 for a plastic drinks bottle or the like to form a shooting target comprises a cap 2 adapted to be screwed onto the neck of the bottle and a valve unit 3 arranged to extend through the top 2A of the cap 2. The valve unit 3 includes a valve to retain air under pressure within the bottle and a radially extending flange that sits against the underside of the top 2A of the cap 2 to retain the valve unit 3 to the cap 2. |
