Replacement ink refills for JETSTREAM ballpoint pens. Single-color (1-color) ballpoint pen refills Black 0.7mm 3 pieces Red 0.7mm 1 piece Model number: SXR-7 Reference price: Around 100 yen x 3 = 300 yen Multi-color (3/4-color) ballpoint pen refills Red 0.7mm 4 pieces Green 0.7mm 2 pieces Model number: SXR-80-07 Reference price: Around 110 yen x 6 = 660 yen - Brand: Mitsubishi Pencil - Colors: Black, Red, Green - Refill thickness: 0.7mm Single-color and multi-color refills are mixed! Please make sure to check the compatibility with your ballpoint pen before purchasing. Instant purchase is welcome. Shipping included, sent via Mercari anonymous delivery. New and unopened, but please understand that this is stored by a private individual. Thank you!