Since the addition of low viscosity inks to their items the pentel brand has never looked back easy to use and comfortable for good measure these branded pentel energel pens come complete with a wide range of benefits to speak of not least the fact that they are left hand friendly and come complete with the afore mentioned exceptional gel inks reducing the risks of smudging by hand or liquid these refills fit all 07mm tip refillable energel pens and the inks are quick drying pentel bran