Hi Alan,I'm so sorry for the late reply, I'm not surer how we missed your comment. I'm sure it's probably too late, however they're Bluestone coping tiles with a 75mm drop face. These are available in many different sizes, however i'd be guessing that these were 1000x400mm.
Advice on new build floorplan
Feedback on floor plan for new build
What do you think of this floor plan for a new build?
Help! We need floor plan advice for our family home