Pen Refill Size Guide & Refill Finder
Use The Pen Bridge pen refill size guide to compare refill lengths, shapes, and compatibility across common ballpoint, rollerball, gel, and fountain pen refill formats. This guide is organized by refill length to help you quickly identify a replacement refill by measuring your existing refill and comparing it to similar options. If you are not sure which refill you need, compare the length, tip style, body shape, and end of your current refill to the list below, or contact us for help identifying a compatible replacement.
Search by type:
Ballpoint, Gel, and Rollerball Refills
67 mm: 
(Lamy M21 Ballpoint)
67 mm: 
(Ohto 4C5NP/4C7NP Ballpoint)
67 mm: 
(Schmidt MegaLine 620 D1 Ballpoint)
67 mm: 
(Schmidt 635 D1 Ballpoint)
70 mm: 
(Ohto 705NP Ballpoint)
76 mm: 
(Schmidt MegaLine 4876 Rollerball)
76 mm: 
(Schmidt Mini 8126 Rollerball)
89 mm: 
(Fisher Space Pen Pressurized Refill PR Series)
89 mm: 
(Ohto 895NP/897NP Ballpoint)
89 mm: 
(Schmidt MegaLine 4889 Ballpoint)
89 mm: 
(Zebra F-Refill Ballpoint)
95 mm: 
(Sheaffer “K” Style Ballpoint)
95 mm: 
(Zebra F-Refill All Metal Gel)
95 mm: 
(Zebra JK-Refill Gel)
97 mm: 
(Caran d’Ache Goliath Ballpoint)
97 mm: 
(Fisher Pressurized Universal Refill)
98 mm: 
(Pentel Multi-Function Gel)
98 mm: 
(Montblanc Ballpoint)
98 mm: 
(Ohto G-95NPS Gel)
98 mm: 
(Ohto PG-M05NP Gel)
98 mm: 
(Ohto PG-105NP/107NP Ballpoint)
98 mm: 
(Parker Gel)
98 mm: 
(Parker Style Ballpoint – Generic)
98 mm: 
(Parker Style Gel – Generic)
98 mm: 
(Schneider Express 735 Ballpoint)
98 mm: 
(Schneider Gelion 39 Gel)
98 mm: 
(Schneider Slider 755 Hybrid Ballpoint)
98 mm: 
(Schmidt P 8126 Rollerball)
98 mm: 
(Schmidt P 900 G2 Ballpoint)
98 mm: 
(Zebra K-Refill Ballpoint)
102 mm: 
(Cross Slim Ballpoint/Gel)
106 mm: 
(Caran d’Ache Frosty Ballpoint)
106 mm: 
(Lamy M16 Ballpoint)
107 mm: 
(Schmidt S 700 Ballpoint)
107 mm: 
(Schneider Express 75 Ballpoint)
107 mm: 
(Schneider Express 225 Ballpoint)
107 mm: 
(Schneider Express 775 Ballpoint)
108 mm: 
(Sheaffer Classic Rollerball)
109 mm: 
(Schmidt S 8126 Rollerball)
110 mm: 
(Lamy M66 Rollerball)
110 mm: 
(Waterman Rollerball)
111 mm: 
(Cross Selectip Ballpoint/Rollerball/Fiber tip)
111 mm: 
(Parker 5th)
111 mm: 
(Pentel EnerGel)
111 mm: 
(Pilot G2 Gel)
111 mm: 
(Pilot FriXion Gel)
111 mm: 
(Schmidt 888 Rollerball)
111 mm: 
(Schmidt 5888 Rollerball)
111 mm: 
(Schmidt 6040 FineLiner)
111 mm: 
(Standard International Rollerball – Generic)
111 mm: 
(TUL Gel)
111 mm: 
(Uni-ball POWER TANK RT Ballpoint)
111 mm: 
(Waterman Ballpoint)
111 mm: 
(Zebra LV-Refill Gel)
111 mm: 
(Zebra MJF Refill Gel)
111 mm: 
(Zebra NC-Refill Gel)
113 mm: 
(Standard Rollerball with Threads – Generic)
113 mm: 
(Montblanc Rollerball/Fineliner)
114 mm: 
(Montblanc LeGrand Rollerball/Fineliner)
114 mm: 
(Parker Rollerball)
115 mm: 
(Lamy M63 Rollerball)
116 mm: 
(Cross Style Ballpoint – Generic)
116 mm: 
(Cross Style Gel – Generic)
117 mm: 
(Ohto 175NP/177NP Ballpoint)
118 mm: 
(Uni-ball Jetstream RT Ballpoint)
121 mm: 
(Pentel Cushion Ball Rollerball)
125 mm: 
(Zebra PM-701 Marker)
143 mm: 
(Pentel R.S.V.P. Ballpoint)
Fountain Pen Ink Cartridges
38 mm: 
(Parker Short Fountain Pen Ink Cartridge)
38 mm: 
(Standard International Mini/Short Fountain Pen Ink Cartridge)
41 mm: 
(Cross Standard Fountain Pen Ink Cartridge)
48 mm: 
(Cross Slim Fountain Pen Ink Cartridge)
51 mm: 
(Zebra V-301 Fountain Pen Ink Cartridge)
52 mm: 
(Sheaffer Fountain Pen Ink Cartridge)
60 mm: 
(Pilot Fountain Pen Ink Cartridge)
67 mm: 
(Lamy T10 Fountain Pen Ink Cartridge)
73 mm: 
(Waterman Fountain Pen Ink Cartridge)
76 mm: 
(Parker Long Fountain Pen Ink Cartridge)
Fountain Pen Ink Converters
42 mm: 
(Kaweco Fold Ink Converter)
52 mm: 
(Kaweco Mini Ink Converter)
58 mm: 
(Pilot CON-B ‘Squeeze’ Ink Converter)
60 mm: 
(Pilot CON-40 Ink Converter)
66 mm: 
(Schneider Ink Converter)
67 mm: 
(Sheaffer Ink Converter)
72 mm: 
(Lamy Z27 Ink Converter)
72 mm: 
(Lamy Z28 Ink Converter)
74 mm: 
(Parker Ink Converter)
74 mm: 
(Parker Slide Ink Converter)
76 mm: 
(Caran d’Ache Ink Converter)
76 mm: 
(Montblanc Ink Converter)
76 mm: 
(Montblanc StarWalker Ink Converter)
76 mm: 
(Schmidt K1 Ink Converter)
76 mm: 
(Schmidt K2 Ink Converter)
76 mm: 
(Schmidt K5 Ink Converter)
76 mm: 
(Schmidt K6 Ink Converter – Threaded)
76 mm: 
(Waterman Ink Converter)
78 mm: 
(Cross Push In Standard Ink Converter)
78 mm: 
(Cross Screw In Standard Ink Converter)
80 mm: 
(Pilot CON-70 Ink Converter)
How to Use This Pen Refill Size Guide
This pen refill size guide is designed to help you compare replacement refills by length, shape, and refill style. Start by measuring your existing refill from end to end, then compare it to the refill images above, which are arranged from shortest to longest.
When comparing refills, look at more than length alone. The writing tip, shoulder shape, rear end, body diameter, and spring position can all affect compatibility. Two pen refills may have a similar length but still fit different pens.
If you are unsure which refill matches your pen, compare your refill carefully against the closest options above or contact us for help identifying a compatible replacement. You can also explore our pen brands page to find refill information by manufacturer, visit our guides page for more help understanding refill types and compatibility, or browse Best in Ink for curated pen and refill recommendations.
Helpful Refill Resources
Need more detail beyond the pen refill size guide? Check out the links below for guides and some of the most popular pen refill types.
- Parker Style G2 Ballpoint Refill Guide
- Pen Refills 101: A Starter Guide for Smooth Writing
- All Refills
- Pilot G2 Refill
- Pentel EnerGel Refill
- Schmidt EasyFlow 9000 Refill
- D1 Mini Ballpoint Refill Guide
