BallPen - Pen amfani da haruffa sanda (tube cika da pasty tawada) tare da ball aya alkalami a kan karshen. Channel a kan abin da tawada da aka gudanar a karshen karamin karfe ball ana katange, cewa lokacin rubuta a farfajiya na Rolls takarda daga bãya gefen tawada wetting. A kananan rata tsakanin ball da bangon damar da shi a juya da mirgina barshi cikin takarda sawu. Waɗannan su ne mafi arha, mafi sauki, don haka ya fi na kowa alkalami. Tawada manna amfani da ball-aya alkalami, da tawada ne daban-daban daga rubuce-rubuce marmaro alkalama. An halicci kan man fetur kuma mafi m, wanda ya hana shi daga gudãna daga cikin sanda.