It seems like you're asking about a "12A drum spring (pack of 5 pcs)." This product is likely a component used in various machines or devices, possibly related to printing equipment or other machinery where drum springs are used for tensioning or other mechanical purposes.

Here’s a breakdown of what you might be referring to:

1. 12A Drum Spring:

   • This could refer to a specific model or type of spring designed for use with a drum mechanism. In printers, for example, a drum spring might help maintain proper tension or positioning in the drum assembly.
   • "12A" might be a part number, product code, or size specification.

2. Pack of 5 Pieces:

   • The product is sold in a set of five individual drum springs, which is common for items that need replacement over time or for use in multiple machines.

If you are looking to purchase this, you can check for it in stores that sell printer or industrial machine parts. Be sure to confirm the exact model compatibility if you need it for a specific machine, like a printer, to ensure it matches the required part.