A precision-made metal disassembly tool designed for Montblanc 146 and 149 fountain pens. This tool allows safe removal of both the nib unit and the piston mechanism using a single device. It is also compatible with some Visconti large-nib pens (e.g., Homo Sapiens, Divina), depending on the nib collar design. Compatibility Notes - Compatible with nib units that have left-and-right notches on the collar. - Not compatible with nib units that have top-and-bottom notches. - Piston removal is generally possible for all Montblanc 146 and 149 models, across all eras. Compatibility confirmed with seven different Montblanc pens (various generations, nib types, and piston styles). This tool is suitable for repair, restoration, deep cleaning, and general maintenance. Please verify compatibility before purchasing; returns due to incompatibility cannot be accepted. A durable and practical tool for Montblanc users, repairers, and collectors. Method of Shipment FedEx or Japan Post NOTICE The lot will be carefully packaged and shipped by FedEx or Japan Post. Delivery usually takes 1–2 weeks. The shipping method may vary depending on the item price and size. Sometimes Customs or the delivery company in your country may contact you by phone or email for clearance. Please make sure you are available to respond. If not, the parcel may be returned to me, and reshipping will cost more than twice the original shipping fee. I appreciate your cooperation.