Hollow block making machine forms the hollow blocks relying on the hydraulic transmission, and it has features of low noise, high production output, and extensive applications. The concrete hollow block made by the hydraulic type hollow block machine has high compactness. Brick/Block Size 9″ x 4″ x3″,10″ x 5″ x3″,8″ x 4″ x4″ Brick Raw Material Cement, Fly Ash, Sand, Stone Dust, Gysum, Lime Sludge,etc …