This mini blue Olympio ballpoint refill fits S.T. Dupont's collection of twist mechanism mini ballpoint pens. The single refill features a royal blue colour that is perfect for signing official documents or writing reports. The refill features a fine-sized nib and instantly dry ink to help minimise the number of unwanted smudges on your work. The small refill works perfectly with all mini twist mechanism ballpoint refills by Dupont.