Description Our Anderson Pens Exclusive Section File comes in a pack of 5 and is used for removing excess adhesive and bits of dried rubber sac from vintage pen section nipples. Either side of this 100/180 grit dual sided file is good for cleaning off your section. Yes, you may have 1 of these at home, but for obvious safety and hygiene reasons, we do not recommend that you use the same file on both your nails and your pen sections. ** Please note that these have rough grit, and should NOT be used on nibs! ** We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.