When I realised that this is the perfect size for a small notions bag, the penny dropped and I finally added these to our Cocoknits line-up.

Each disc is imprinted in both US and mm needle sizes from US 0-15 / 2-10mm. There are 16 discs in total with a hole for the following metric sizes:
2mm, 2.25mm, 2.75mm, 3.25mm, 3.5mm, 3.75mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 8mm, 9mm and 10mm.

The overall size (closed) is 2.5cm diameter X 4cm high (1" X 1.5")

Discs are in an array of rainbow colors created to bring joy to your day and a smile to your face! The discs are arranged in ROYGBV - the beginning disc color is random. It varies for each Needle Gauge and cannot be chosen when ordered. 

Made from 100% fiber waste called polylactic acid (fermented plant starch), so it is 100% biodegradable and contains no plastic. The gauge clicks into place with tiny magnets embedded on the underside of each disc.