3PCS S.T. Dupont Défi Multifunction Ballpoint Pen Refill End Cap Adapters
3PCS D1 End Cap Adapter - S.T. Dupont Défi Multifunction Ballpoint Pen Refill End Cap Adapters - 2 Colors. High-quality D1 end cap adapters for S.T. Dupont Défi Multifunction Ballpoint Pen Refills are available in black and white.