Add to your assortment of nib sizes or replace a nib that took a high dive off your desk with the TWSBI replacement nib unit.

TWSBI Diamond 530, 540, 580 Replacement Nib Unit
  • From $20.00
  • Sold out

M7443580

TWSBI Diamond Mini Replacement Nib Unit
  • From $20.00

M7443250

TWSBI Vac700R Replacement Nib Unit
  • From $23.99

M7446020

TWSBI Vac Mini Replacement Nib Unit
  • From $21.00

M7444770