Rollerball pens use a ball point and a water-based instead of an oil-based ink. The ink in a roller ball tends to go more deeply and more widely into the paper than the ink in a ball-point pen.
Uni-Ball Eye UB-157 Stick pen Black 12

Uni-Ball Eye UB-157 Stick pen Black 12 pc(s)

Uni-Ball
£39.99
Q-CONNECT KF50140 rollerball pen 10

Q-CONNECT KF50140 rollerball pen 10 pc(s)

Q-CONNECT
£13.99
Q-CONNECT KF50139 rollerball pen 10

Q-CONNECT KF50139 rollerball pen 10 pc(s)

Q-CONNECT
£13.99
Q-CONNECT KF00233 rollerball pen

Q-CONNECT KF00233 rollerball pen 1 pc(s)

Q-CONNECT
£7.99
Pilot Hi-Tecpoint V5 Blue

Pilot Hi-Tecpoint V5 Blue

Pilot
£30.99
5Star 918508 rollerball pen Clip-on retractable pen Black 12

5Star 918508 rollerball pen Clip-on retractable pen Black 12 pc(s)

5Star
£16.99
5Star 908323 rollerball pen Stick pen Black 12

5Star 908323 rollerball pen Stick pen Black 12 pc(s)

5Star
£4.99
5Star 333328 rollerball pen Stick pen Black 50

5Star 333328 rollerball pen Stick pen Black 50 pc(s)

5Star
£7.99
5Star 295209 rollerball pen Stick pen Red 50

5Star 295209 rollerball pen Stick pen Red 50 pc(s)

5Star
£8.99
5Star 295195 rollerball pen Stick pen Blue 50

5Star 295195 rollerball pen Stick pen Blue 50 pc(s)

5Star
£7.99
Pilot V7 Fine Needlepoint Rollerball

Pilot V7 Fine Needlepoint Rollerball 1 pc(s)

Pilot
£35.99
Pilot V5 Extra Fine Needlepoint Rollerball

Pilot V5 Extra Fine Needlepoint Rollerball 1 pc(s)

Pilot
£35.99