It looks like you're in USA.
You will find more suitable content on the following page:
www.nora.com/united-states/en/products/further-stair-accessories/nora-visually-impaired-strips
Textured striping for the visually impaired can be inserted into any one-piece nosing-tread-riser stairtread.
Smooth surface rubber striping that can be inserted into any one-piece nosing-tread riser stairtread.
Width of strip is ~2" (50.8mm)
You will find more suitable content on the following page:
www.nora.com/united-states/en/products/further-stair-accessories/nora-visually-impaired-strips