Compatible with:

BK91, BK93

BK91HD, BK93HD

BK93CR

BK90L

BK660M (Star-V)

BK410 (TKO)

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. Two pieces per pack.