Brookdale has a range of coarse aggregates for concrete, asphalt,sealing and drainage purposes. Used in road surfacing, Aggregate are imperative for durable and sustainable road infrastruture. Below are some of our Blue Metal Sizes Cracker Dust 7mm 10mm 7/10mm 14mm 16mm 20mm 20-30mm Drainage Stone 40-60mm ballast Pitching Stone Armour Rock Boulders