A Base Lab Tools Exclusive! 1" thick solid aluminum breadboards. These breadboards provide extra rigidity in applications where a solid, uniform material is required. Our 1inch thick breadboards still have a full 1" grid of 1/4-20 tapped holes and at least 5 counter bore mounting holes. Base Lab Tools "Extra Thick" series of solid aluminum breadboards are built to order with a fast, 2-4 week lead time, 10 days for unanodized!