For most things that require ink (especially printers) I'm very wary of aftermarket products. They usually don't seem to fit properly or they don't last nearly as long. However, I have been using these universal watch straps in my TCX-11 for over two years and have had no problems with any of them. They seem to last as long as the OE grades and are significantly cheaper. They come sealed in small plastic bags so you don't have to worry about them drying out. I've bought them from different vendors and they all seem to be of the same quality. I think brands can make a big difference when it comes to printer ink, but when it comes to ribbon ink, cheap is the way to go.
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