Border brick imprinted concrete mats to create cut stone borders Manufactured in the UK using the latest German Technology. We use unique polyurethane polymers to produce a tough, long lasting compound, that is designed to withstand years of use in Imprinting Concrete. A Cut Stone Corner Brick for 90' corner turn of the Cut stone Border. The bricks are single, double or corner brick. Set contains 1 x single brick, 1 x double brick and 1 x corner brick