Pilot Refill for Acroball/Acroball Deluxe Medium Ballpoint 1.0 mm Tip Black, Box of 12

Suitable for Acroball retractable ballpoint pens. Specially designed for acroball 15 and 25 retractable ballpoint pens Black Box of 12 pieces Unique low-viscosity hybrid ink Patent pending grip features tire-like patterns and a slightly curved shape to give a non- slip hold 1.0Mm