Compared with the aluminium profile fixture,the accuracy is much higher , and it is hard to deform. Inner wall is very smooth, outer walls is sandblasted, relatively fine uniform, but not very smooth,. Cast aluminium fixture is much heavier than aluminium profile fixture. Cast aluminium fixture is aluminium which is casting with a special manufacturing process ,compared with ordinary aluminium This product has toughness, strong shock resistance, high hardness and strong antioxidant activity., Manufacturer: LLOOPK