Gerbitz Gerbitz Brick Building Sets from Germany When you first pick up a box of Gerbitz Steinbaukästen you know from the weight that they are real bricks. And, just like real bricks, you can build using a trowel and mortar. However, unlike real masonry, the mortar is water soluble. Your creations can be disassembled and, with additional mortar, rebuilt in a new way. The bricks can even be used as building blocks--without mortar. Many of the sets are packed in sturdy hardwood boxes, which make them great gifts. Building Boxes Baumeister Sets Special Sets Supplies