Solid and compact design allow uniform and correct compaction of Proctor and CBR sample. Technical Specifications: Hammer weight 2.5KG (300 mm / 12") and 4.5KG (450 mm / 18") Hammer fall height(mm) 300mm and 450mm Compaction cylinder mould Ã??101.6x176.40mm and Ã??152.00x177.00mm Power 220V/380V ( choice) Light weight compaction unit volume 593.2KJ/m3 Heavy weight compaction unit volume 2684.9KJ/m3 Compaction speed 30-32 time/minutes Set hit count 0-99times( adjustable)