The 4025-00 is a 1/4" thick block or slab.

It is 1/4" thick and can be used to make a nut, a small saddle, or just about anything you can imagine.

Measurements   
Length: 2.5”  //  63.5mm
Thickness: 0.25”  //  6.35
Height: 0.437”  //  11.1mm