Suitable for all Pentel EnerGel gel rollerball pens with a line width of 0.35 mm. Can also be filled into all other line width models of Pentel EnerGel products.
0.7mm refill for a range of EnerGel pens including BL107, BL77, BL57, BL437R1 and Sterling Symphony and Excel gift pens
With its revolutionary low viscosity liquid gel ink, the EnerGel formula is smoother flowing and quicker drying than ordinary gel ink, giving a similar sensation to liquid ink.
Because the ink dries quickly it's especially appreciated by left-handed writers, as well as those who are right-handed, as there's less risk of the ink being smudged when your hand moves across the page. Unlike liquid ink products, though, EnerGel doesn't need a regulator to control its flow - the ink is delivered directly from the reservoir or refill to the tip in one smooth transition giving you the ultimate writing experience!