Lamy M66 – check the number on your old rollerball refill If you have a Lamy rollerball pen, check the number on the old Lamy refill. If it says "M66", the Lamy M66 Rollerball Refill for Swift will suit your needs. Black, blue and red ink colors.
- Overall Size - 4 1/4 in. x 1/4 in. (108mm x 6mm)
- Weight - 5 g