Treads are a preformed reinforced concrete tread (or step section only). The treads are 50mm thick & can be laid directly on to brickwork, steel or timber supports. The treads have a non-slip prefinished surface & are extremely durable & quick to install. Standard sizes include 600mm, 750mm, 900mm, 1000mm, 1070mm, 1100mm, 1220mm, 1350mm, 1500mm & 1800mm.