2pcs 0.7mm Red Ink Ballpoint Pen Refills For BK90, BK93SP, BK77

Reuse your empty pen! Pentel 1.0mm, black ink, ballpoint pen refill. Reduce your environmental impact by using refills in your pens instead of buying new ones. Durable tip delivers a consistent line without skipping. Writes for over a kilometer. Compatible with BK91 and BK410. Two pieces per pack.