New 6" Solid Concrete Building Blocks-High Density ?

I have a few hundred 6" solid concrete building blocks that were intended for a project but are no longer required. These are new and unused that have been dry stored. Some have minor chips but these will not affect the use of the block. Suitable for House extensions inner and outer skin Internal wall construction, factories, farm buildings, stables, retaining walls etc Suitable for the footings of house builds, extensions I am offering these for 0.50p each collection only any quantity, from Farnborough, Hants. Please call 07947 539732. Pat