PENTABLOCK™ is a unique interlocking vertical construction block system with a Natural stone option. These blocks feature a patented design with a simple rebate joint and mortarless quick and easy construction process. PENTABLOCK™ creates pure vertical walling used for all applications in the Residential , Commercial, Civil and Landscape construction industries –  including retaining walls, feature walls, Pillars and Columns, General structural construction, swimming pools, Garden and Water features, fireplaces & fire pits, fencing, and more.