Hollow Concrete Block provided by our company, is manufactured, hardened and cured before reaching the site and is a very durable and strong material. This block has a rough texture which allows good bonding between the concrete blocks and the mortar. This has a uniform size and have two hollow cores within it which make it very light in weight. Hollow Concrete Block is very good for acoustics and sound insulation. This can have a reduced thickness as it is very strong.