Two holes for different pencils. One hole fits standard-sized pencils up to 8.2mm. The second hole is designed for thick pencils up to 10.2mm. For standard-sized black lead pencils up to 8.2 mm with a sharpening angle of 23° for clear and accurate lines For standard-sized colored pencils up to 8.2 mm with a sharpening angle of 30 ° for broad, soft lines For thick black lead and colored pencils up to 10.2 mm with a sharpening angle of 30° for broad, soft lines