... thicknessArbitrary thickness ≤ 50mmTable size490mm (width) * 250mm (D)Size from the edge of the hole centerAdjustable between 10mm-30mmPower supply220V/50HZRiveting heating system ... , schools, enterprises and institutions of the financial documents, bills, ledger page, the report of the binding.Also available in the file, journals, documents, data, drawings ...