Red Oak Cherry Retro Left Return Stair Tread 42 in

Your application where you are looking to install a new wood tread over an existing pine tread is exactly the application that these retro treads were designed for. The 3/4" thickness is the thickness of the body of the stair tread. The bullnose on the front is a full 1" thick, 1/4" thicker than the tread body.

Here's a link that may give a more accurate description of the retro treads:

http://www.stair-treads.com/retro-fit-my-stairs