THORLABS MB2424 Optical Breadboard. Anodized aluminum. Standard 1/4"-20 holes at 1" spacing. 

These are used and have some adhesive residue and minor scratches. A few threads may be slightly damaged or tapped to a larger size. It appears to be flat and not warped or bent (to my eye). 

List price $562.87 

Weight is ~30lbs, shipping may be pricey to west coast. Discount available for local pickup (19041), please send a message. 

Condition: Used. Adhesive residue, minor scratches. Appears unwarped and flat. A few taps may not be perfect due to previous use. Condition may vary, I have a few for sale. 

Please email with any questions!