The Schmidt MDR 3 provides a two-system twist mechanism for penmaking and repair. Match the mechanism and its fittings to your pen design before assembly.
- Two-system twist mechanism with a D refill and lead adapter for 0.7mm leads
- Twist-action lead feed
- Includes eraser
- Supplied individually as one mechanism assembly
- For building or repairing a pen; barrel and other external pen parts are not supplied