Mockup, not sent. Draft for review only. Copy needs Mike’s OK before it goes into Klaviyo.
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Bastion Bolt Action Pen
Will it fit my refills?
The 10-second check before you buy ink.
The 10-second check before you buy ink.͏‌ ͏‌ ͏‌ 
Will It Fit
Your Refills?
If it’s a Parker-type G2, yes.
Here’s how to tell in 10 seconds.
Three Bastion bolt action pens on a leather desk pad
Shop Refills
Every Bastion pen, regular or slim, takes the classic Parker-type G2 refill. It’s an international standard, so you can find it almost anywhere.
The catch: another refill shares the “G2” name, and it does not fit. Here’s how to tell them apart.
The 10-Second
Check
✓ Fits
✓Classic Parker-type G2, 98mm x 5.8mm
✓Body tapers down toward the point
✓Schmidt easyFLOW 9000
✓Parker QuinkFlow
✓Fisher Space Pen (with adapter)
✓Bastion refills
✕ Does Not Fit
✕Pilot G2, even with the same “G2” name
✕Pentel refills
✕Newer wide-body refills with no taper
Quick rule: if the pack says Pilot, it will not fit.
How To
Change A Refill
How to change refills: unscrew the tip, remove the spring and old cartridge, insert the new cartridge, put the spring back, screw the tip back on
Unscrew the tip, slide out the spring and the old refill, drop in the new one, put the spring back, and screw the tip on.
Pick Your
Ink
Bastion black and blue refills
Standard Ballpoint
The ink your pen came with.
✓0.7mm tip, medium point (about 1.0mm line)
✓Black or blue
2-pack $8.99
Blue 6-pack $13.99
Shop Ballpoint →
Bastion black and blue refills
Gel
Deeper color, thinner line.
✓0.55mm tip, fine point (about 0.7mm line)
✓Black or blue
2-pack $8.99
Blue 6-pack $15.99
Shop Gel →
Still
Not Sure?
Reply to this email with a photo of your refill, and we’ll tell you if it fits your pen.
Shop Refills