Kaweco Replacement Steel Nib 060. Suitable for AL Sport, AC Sport, Art Sport, Sport Luxe, Liliput, Student, Allrounder, Aluminium Special and Dia pens. DOES NOT work with Classic Sport or Ice Sport. Available in nib sizes: Extra-Fine, Fine, and Medium. This package contains one chrome extra-fine replacement nib. TO REMOVE: grip the nib top and bottom with fingertips and unscrew from the barrel. TO INSERT: grip the new nib as before and screw in until finger tight. Do not grip the nib via the sides or apply uneven pressure or you will distort the nib or detach it from its feed.