Sewline Glue Pen Refills (Yellow)

Do you need the Yellow type glue for your Sewline Glue Pen?

Don't panic! - Here are the Yellow refills for the pen. (these also fit the Bohin Pen by the way!)

What is the difference to the blue glue refills? - Actually, we are not sure!?

Some sources say the yellow glue is identical to the blue, just a different colour (which may be easier to see on some materials). Other sources say that the yellow glue is a little stronger? If you know the correct answer please do let us know!

Packet of 2 refill sticks