This retractable Correction Tape 5mm Width x 20M length has an advanced retractable roller head. Advanced retractable mini roller head. Slide the switch back to retract the tape head. Tape cuts cleanly and adheres well for great results. Push the slide switch forward and the head comes out. Push for correcting the whole sentence. Pull for correcting one letter. Pull the slide switch back to store the head inside the casing.