We have concrete lego blocks for sale in various sizes, ranging from 600mm x 600mm blocks right up to 2 tonne, 1800mm x 600mm interlocking retaining wall blocks. Inexpensive and versatile, interlocking concrete blocks can be used without a bonding agent due to male/female connections ensuring their stability. Lifted easily into position using the built-in lifting pins, these interlocking wall blocks can be used to build both temporary and permanent structures, including retaining walls for earth and ground retention. They're also frequently used to build storage bays in agriculture and industry, boundary walls, barricades and are ideal crash barriers or traffic control measures. As a bonding agent is not required they can also be placed in position in all weather conditions and much more quickly than tradition concrete blocks which require mortar. All our interlocking retaining wall blocks are made from high quality aggregates, locally sourced and mixed by trained professionals with many years experience preparing durable concrete mixes.