Listing includes one 3/16" x 12" x 24" long plate made from 6061 Aluminum. Buy as many as you need. Thickness tolerance: -.005" to +.005" Width tolerance: +.000" to +.125" Length tolerance: +.000" to +.125" Temper: T651 Meets specs: ASTM B209 Machined Finish (There will be some normal scratches/nicks on Aluminum. This item is not intended to have a finished surface)