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/metal-repair-stair-angle
Piece Length: ~39.37" (1.0 m)
Screws: middle of hole to middle of hole ~2.5" (63.5 mm)
Art. 6637
You will find more suitable content on the following page:
www.nora.com/united-states/en/products/further-stair-accessories/metal-repair-stair-angle