The items in the box are 80-grit sandpaper and 25mm disc bits. Unopened, 100 pieces. The items in the bag, from left to right: 80-grit, approximately 80 pieces 150-grit, approximately 170 pieces 240-grit, approximately 190 pieces Both the sandpaper and the disc bits are all 25mm. Regarding the disc bits, I used them with the URAWA G3. They also worked with the Lexia. Purchased from SHEIN. 100 pieces for about ¥700, which I think is a good deal! I am not considering selling them separately. Please purchase as a set. Can be used for foot care callus removal. Can also be used for length adjustment of acrylic nails, etc. #FootCare #FootCallusCare #SoleCare #CallusCare #NailFile