8 x Schmidt 635M Mini Ball Pen Refill - Black - (Lamy M21 and Cross 8518-4 Compatible)

Will fit other pens but ideal for sworkovski pen as stated

Great replacement cartridges. Fitted pen and worked well.Hoping their longevity is as good as initial impression

Refills were the size required BUTdid not include the screw top fixing to allow them to be fitted in the pen. Very disappointed that this was not included particularly as it is show in the product picture.

Second time that I’ve bought these. Last a decent amount of time and are lovely writers. Will buy again.

I bought the medium black refill. It fits perfectly into my Swarovski Crystal pen, as this was the exact refill that came with the pen when it was bought brand new.It writes beautifully with smooth ink flow.

Great. They fitted and work well as said on the description of the product. Great Flow, deffinately value for many and each refill last a long time.

When my pen ran out of ink I thought that was the end of it until I went on line and found replacement ball point refills that fit perfectly, very reasonable and quick delivery.

Perfect fit for my Olivia Burton pens.Don't really like the black nib but hey!Packaged and arrived in good standard.