Tajima Chalk Rite Dura Iii 45M With 2.8Mm Braided Impact Cord & Double Ratio Roll Up Mechanism. Heavy Duty Chalk Line With Impact Cord. Housing Holds Up To 709G Of Chalk. Braided Maximum Bold Cord Creates 2.8Mm Wide Line. Large Leak-Proof Refill Opening. Ergonomically Designed Shock Proof Housing With Heavy Duty Aluminium Front Panel. Double Ratio Roll Up Mechanism For A Fast Rewind. Replacement Line Available.PTDTOTDIRTACR604S