This is a set of 5. These are fine-tipped, strong, and easy-to-write needle-point oil-based ballpoint pen refills. They are compatible with high-end ballpoint pens. These are G2 refills, which conform to the G2 standard, a format developed by Parker for their oil-based ballpoint pens and later defined as the international standard ISO 12757 (JIS S 6039 in Japan). If you want to purchase more than 5, please comment. They are perfect for pens made by wood pen artists. These do not have packaging or springs, but they are unused. 【Specifications】 ・Oil-based needle-point ballpoint pen refill (Φ0.7), packaged in OPP bags ・Size: Total length 98.6mm, shaft diameter Φ5.8mm ・Weight: 1.8g ・Material: PP Compatible products: NBP-1P7 / American Taste / American Taste Deluxe / NBP-T10A / NBP-10AR ・Other company compatibility: Tombow: BR-EF, Staedtler: JUNBO458M ・Parker: Oil-based refill / Gel refill ※Successor to NO.P80-07NP black (compatible) ・Auto compatibility: PS-807NP / PS-207NP / PG-805NP / PG-807NP / PG-205NP