Click to expand Tap to zoom 100mm Interlyte 3.6N Aggregate Block by Buttles Save Liquid error (product-badge line 32): -Infinity% £1.65 SKU 05KI02520 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart General use aggregate block. 3.6N compressive strength when laid upright.