Five each of 0.5mm and 0.7mm ballpoint pen refills, black ink, knock type. - Ballpoint diameter: 0.7mm - Model name: SXR-7 5P - Knock type: Ink color: Black - Quantity: 5 refills - Ballpoint diameter: 0.5mm - Model name: SXR-5 5P - Knock type: Ink color: Black - Quantity: 5 refills Thank you for looking. I mistakenly purchased the wrong refill model at a stationery store, but I can't exchange them because I don't have the receipt. It's a waste, so I would be happy if someone could use them. Price includes shipping, so no price reduction. Sold as a set.