FisherSpace Pen Co. 9004536 with Ink Fine Pt. Universal Cartridge, Black

I bought some Fisher Universal Refills and planed to use them with my Lamy 2000 multipen (which uses standard D1 refill). Unfortunately, it is not working.First, I broke them to the shortest position, which is around 67mm similar to D1 refill. Measured with caliper, the diameter of refill from Lamy is a bit narrower than Fisher refill. Lamy is 2.34mm (0.092"), while Fisher is 2.36mm (0.093"). It is a bit off from what Fisher claimed on their package(*). We need to apply certain amount of force to insert it into Lamy 2000. The worst thing is, since then my Lamy 2000 could not hold Lamy refill tight.After research, true D1 refill dimensions according to ISO 12757:- Length: 67(+0.3)mm, means the length is ranged from 67.0mm to 67.3mm- Diameter: 2.35(-0.05)mm, means the diameter is ranged from 2.30mm to 2.35mm(Product with dimensions out of range is not identified as D1 refill.)I have tested bunch of "D1 refills", 2 groups of them were identified.Group 1, Confirmed to be standard D1 refill:- Schmidt (baseline, as they specified the compliance of ISO standard), Lamy, Parker, Rotring, Kaweco, Staedtler, Monteverde, Pilot, Uniball, Pantel, Platinum, Tombow and Ohto- Measured diameter: around 2.32mm to 2.34mm- Refills and pens of group 1 brands are perfectly interchangeable.Group 2, Questionable D1 refill:- Zebra, Fisher- Measured diameter: around 2.36mm to 2.4mm- Refills and pens of group 2 brands are perfectly interchangeable.During the test, I found that group 1 refills are loose fit inside group 2 pens, which could be used but fall out easily. On the other hand, after installed group 2 refills into group 1 pens, holding tube of group 1 pens were enlarged.The 0.01mm error would make huge difference. In pen enthusiastic community, Zebra's multipen refill (4C) is well known that they are not D1 standard. It is because diameter of their refill is larger than 2.35mm, which is not complying the ISO 12757 specification: 2.35(-0.05)mm. They refill is not recommended to be used in other brands' D1 compatible multipens, to avoid the what happened to my Lamy 2000 multipen. However, according to my test and some researches, it could be concluded that diameter of refills from Zebra and Fisher are similar.In short, Fisher Universal Refill is not D1 compatible refill.Reference:https://bleistift.blog/2021/05/d1-is-not-d1/*Remarks:I have measured the diameter of Fisher Universal Refill with full length configuration as well.- Diameter of those two break off sections (a rod inserted to the end of refill body): 2.34mm (0.092")- Diameter of refill body (end section with inserted rod): 2.36mm (0.093")- Diameter of refill body (middle section without inserted rod): 2.34mm (0.092")Since the rod with 2 breaking point is inserted to end of the refill as a plug. The section refill body with inserted rod is expended a tiny bit. This is the main reason towards the compatibility issue.

While this is (as they do point out) a tiny capacity refill, it does do one thing perfectly: it's a Fisher.It CAN fit a "Pilot's Pen," with a little fiddling. Why those pen makers do NOT make their pen fit the Fisher seems ... odd. But ... you can defeat their design flaw using some thin tape, or by making an adapter from the Pilot's refill. Whew.Jotting notes at 2am is now possible, without "shaking it out."These also perfectly fit a Lamy 4-color.I use Fishers in anything they'll fit in, an old habit from doing engineering and testing work that required notekeeping in unusual spots. The standard Fishers fit almost anything a std Parker ball or gel fits. BE ADVISED ... THIS ONE IS NOT A STANDARD REFILL.Plan ahead. This refill is ideal for minimalist notes where space restrictions or, with the Pilot Pen, lighting is required. This will NOT write a lot. It is TINY.

Fits the Mini Bolt Action Pen from Big Idea Design.

This fits Kaweco Sport Ball Point Pens!Just what I was looking for - pressurized pen for my small Brass Kaweco Sport ballpoint pen.It works great and is extremely smooth and legible. Supreme! I will continue to purchase this as long as i can be assured the ink lasts for a long time. I will update this review if the ink doesnt last long. But it’s fisher so my guess is it’ll last a considerable length of time.

Writes up, down, and sideways. Lasts a long time. Adaptable for different lengths by breaking off a scored section if needed.

I can't find a pen to put this in. Apparently, this refill is for very specific pens and I have hundreds from my father's lifelong collection hobby. This fits none of them.

Service from Green_Valley_Place has been outstanding. I had a problem with a delay in receiving the product due to issues with USPS. Even though it was no problem with this vendor, they were willing to provide a full refund, after I finally received the product. This is outstanding customere service above and beyond my expectations. Highly recommended. Pen refill cartidges are in the original packaging. This cartridge has segments to allow you to modify the length, if needed, for a given pen. Great product, great price and fantastic service from Green_Valley_Place.

Had a multipen which took D1 refills, these Fisher refills fit the bill perfectly. Just note they write a lot less then a full sized refill obviously.

It was a chance find and it fits the desired pen

refill per penne multi punta; dotato di punti di rottura per adattarsi alle varie lunghezzescrive sul bagnato, su superfici unte e con la punta capovolta

Prodotto corrispondente alla mia esigenza sulla mia penna. E' possibile acquistarne altri pezzi anche di altro colore (rosso e nero) con lo stesso ordine?