Sheaffer Lifetime Vac-Fil Nib Unit. (Fine) N512 £25.00 Quantity: at £25.00 each Add To Basket Summary; Manufacturer: Sheaffer. Designation: Lifetime (Vac-Fil). Origin: USA. Material: 14ct Gold. Dates from (approx): 1940. Overall Length: 19mm not including the threaded section and feed. Writing Width: Fine. Notes: All sizes and measurements are approximate. Any replacement nib may need some adjustment when fitted to the pen. We can fit this nib as part of a service on your pen, email us for details. Postage in the UK is free on this item!