Pilots ink refill RFJS-GP-f / RFJS-GP-M makes filling easy and straightforward.
Length of the refills: 99 mm
Easy to use
The durable ball hard metal keeps its shape and is extremely durable
Can be used with the following pens : BP-S Matic, Super Grip, B2P, B2P Grip, Rexgrip, Feed GP3, GP4 Feed and Vega