Levenger Rollerball Refill Sampler Pack, 6 Assorted Styles (PR1390) 1 Extra-Fine (0.8 mm) Fiber Tip Refill in black with a write-out of 2,624 ft. 1 Medium (1.0 mm) Fiber Tip Refill in black with a write-out of 1,640 ft. 1 Broad (2.0 mm) Fiber Tip Refill in black with a write-out of 1,968 ft. 1 Extra-Fine (0.5 mm) Rollerball Refill in black with a write-out of 5,249 ft. 1 Fine (0.6 mm) Rollerball Refill in black with a write-out of 3,937 ft.