B. Mccaffrey’s manufacture and delivery a wide range of blocks using limestone aggregate. They come in arrange of sizes (outlined in the table below), and can be delivered in any quantity. The have been all manufactured to BS EN 771-3 and the block production facility is audited on an annual basis to ensure quality is maintained throughout the product. Can be manufactured in two strength classes 7.3N and 10N. CE certificates are available upon request.