Lead-free jumbo plastic ballpoint pen refill with a 1.0 mm or 1.4 mm tungsten carbide writing ball in a tip made of rust-proof steel. Medium-viscosity ink paste for a comfortably smooth flowing writing experience. In compliance with ISO 12757-1/2, waterproof. The low-pollutant refill is compliant with the REACH regulation (1907/2006) and contains no elements on the SVHC (Substances of Very High Concern) list or in its annexes.