Nothing beats the SA2-04x06 Solid Aluminum Optical Breadboard for its combination of durability, quality workmanship, and affordability. This 0.5 inch thick, 4 x 6 inch solid aluminum plate is perfect for all kinds of non-critical applications where higher performance, and higher priced breadboards are simply not necessary. A wide variety of breadboard accessories make it easy to incorporate these breadboards into larger optical systems with ease.