Featuring elegant curved ends, this starting tread creates a grand entrance while providing a smooth transition from the floor to the staircase. Starting step for the bottom of a staircase Single returned end for staircases open on one side Elegant curved ends and wider design adds visual impact and enhances the staircase entrance Reversible tread - Can be used with the bullnose miter on either the left or right side Tread and riser are unattached, allowing the tread to be used as left hand or right hand as needed Crafted from high quality wood Ready to stain or finish Durable construction for long-lasting performance Dimensions: Riser height: 7-3/4" Tread thickness: 1-1/32" Tread size: 11-1/4" 6-1/4" radius bullnose 48" size = 60" overall 60" size = 72" overall 72" size = 84" overall Notes: Our stair treads are constructed from solid wood staves bonded together for strength and stability. This tread construction is the industry standard, offering significantly greater durability and resistance to warping compared to one-piece treads.