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An excellent product - purchased for my Montblanc Starwalker and fits perfectly. It fills correctly and is better than most converters. All in all, a no frills converter that does the job perfectly. The service was absolutely top-notch! The seller sent the item first class and it arrived next day - absolutely terrific value for free postage! Couldn't have asked for more.
I bought this to use in my Mont Blanc Starwalker pen and it works a treat!!
Minimal packaging with no wasteful use of plastic. The converter itself is well made and easy to use - note there are no instructions for use provided but you can easily search for instructional videos on how to use this product if needed.
The Pilot MR2 for sale from amazon uk takes international standard sized cartridges, and so this converter would be expected to work with it.
However, when I received it, the hole in the converter is just slightly too small to allow the converter to be inserted. I remedied this with a drill bit, carefully widening the hole out and removing any plastic from the converter and then it works perfectly.
If you're a Pilot MR owner, I'd advise against this converter unless you have the time and tools to widen the hole. Instead choose a different converter.
I purchased this for my fountain pen, which I carefully measured to make sure the insert would fit. This item claimed to be 7cm long, which would have fitted my pen. When it arrived it actually measured 7.5 cm which is too long for the barrel of my pen so hence another useless purchase.
I used in my Mont Blanc Starwalker .They do not make one for this model! It is about 1 mm. too long for a perfect fit so I hacksawed 2mm off of the end of the filler without any ill effect and it now fits and works perfectly
I bought this to fit a fountain pen that doesn't come with a converter. It's a perfect fit for the MUJI Aluminium fountain pen, and now im not just restricted to their small own brand cartridges. All round great purchase with fast shipping.