Do these refills fit the Frixion clicker pen? I can't see what the end of the refill looks like in the pic provided.

I don’t know. I got them for my frixion 4 color clicker. I know they work well for that. They might not fit a regular frixion clicker.

would this fit in Uniball Jetstream?

I have no idea what Uniball is but in my experience, these refills are specifically for the Pilot Frixion pens so if this uniball is a Pilot Frixion pen, then yes they should fit. If your pen is NOT a Pilot Frixion, I would say no.

ASIN	B071VNNGSZ
Best Sellers Rank	#19,377 in Office Products ( See Top 100 in Office Products ) #3,675 in Pens & Refills
Brand	Pilot
Brand Name	Pilot
Customer Reviews	4.5 out of 5 stars 2,094 Reviews
Ink Colour	Blue,Green,Red,Black
Item Dimensions	14.5 x 7.5 x 0.5 Centimeters
Item dimensions L x W x H	14.5 x 7.5 x 0.5 Centimeters
Manufacturer	Pilot
Manufacturer Part Number	LFBTRF
Model number	SG_B071VNNGSZ_US
Number of Pieces	12
Package Size Name	Value Set
Point Type	Extra Fine
Style	Gel
Style Name	Gel
UPC	191308006426
Unit Count	12 Count

Pilot Gel Ink Refills for FriXion Ball 4 Gel Ink Multi Pen, 0.5mm, Black/Blue/Red/Green Ink, 6 Packs 12 refills total Value Set

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