Where can you source black ROPP aluminium caps in specific sizes (e.g. 18mm x 12mm for 5cl bottles)?

Members recommend checking several UK suppliers who hold stock or can source specialist bottle caps:

- **Croxsons** — suggested as a starting point for ROPP aluminium caps - **Pattesons** — mentioned as a potential supplier who may be able to help - **Rawlings** — noted as sometimes holding stock of these sizes

One member successfully sourced 20k units urgently, suggesting these suppliers can handle larger orders and specific dimensions. For urgent requirements, contacting multiple suppliers simultaneously is recommended as stock availability varies.