2-in-1™ Correction Combo handles both large and small corrections. Just twist off the cap to reveal the foam wedge applicator for making large corrections. For small changes, pull off the clear cap to use the pen tip. Corrects ballpoint, gel, roller ball pen and most marker ink. Correction Fluid Type: Foam Applicator/Pen Tip; Base Material: N/A; Color(s): White; Applicator Type: N/A.