This is a Pentel Mechanica discontinued mechanical pencil nozzle component. It was kept as a spare part. The Mechanica has undergone slight specification changes over the years, and some models may have limited compatibility. Therefore, please check the images carefully before purchasing. The graph paper in the third image has a grid size of 1mm x 1mm. 【Important Notes】 ・Returns and cancellations due to the buyer's circumstances are not accepted, so please consider this before purchasing. pmg pg4 pg7 pg2 pg2003 pg1804 pg1505 discontinued m q pd ps qe p