In order to prevent chipping of stairs and consumer injuries, stair nosing can be added as a type of protective cover. These products are available in various shapes and designs.
To see Amstep's catalog of non-slip stair parts, click the link below:
http://www.amstep.com/stair-nosing.html
http://anti-slip-stair-treads-nosings.amstep.com/category/series-100-stair-nosings-for-new-stairs