Screw fixing: remove the rubber insert to access the fixing channel. Position the profile, mark the fixing points and drill suitable holes for the stair substrate. Secure the profile using suitable screws and plugs, then refit the rubber insert flush with the profile.
Adhesive fixing: clean and dry the stair edge, apply a suitable adhesive to the underside of the profile, press into place and allow it to cure according to the adhesive manufacturer's instructions. Confirm suitability for your substrate and application before fitting.

Keep the profile and rubber insert clean and free from grit. Wipe with a soft damp cloth and dry after cleaning. Avoid abrasive pads. Check the insert and fixings periodically and address any loose or damaged parts.